Stalls when braking (solved!)

(2000 Sporty) I have just overhauled my fuel tank, details of which would be another thread.....but here is a new twist: it starts, runs and drives just OK....but then , after hard to moderate braking, it acts like it is lacking fuel, stops and lights up the CEL...tests no readeable code ....and will always restart right away and kill the CEL.
FUel tank is 1/3 to 1/2 at this time but it used to burn the fuel way down low on the tank .

UPDATE: Problem solved.....but not sure why.
Hard braking rushes the fuel in the front of the fuel tank, which at low level depletes the fuel pump located almost at the rear....that is normal...but it depends what one calls "low level"..
As the behaviour (described above) was indeed symptomatic of such, I have filled the tank from 1/3 up to 3/4...and problem has disappered. And I know 1/3 indicated was really 1/3 fuel.

SO what happened? it was not like that before I dropped the fuel tank and turned it in all directions and positions working to obturate the series of holes 1/2 inch just above the seam all around the tank . was something displaced in the fuel pump system that makes it impossible to feed from low level....low level meaning 1/3 the tank is not enough when braking hard?
Issue opened to comments....

There should be a baffle around the fuel pick up that probably came loose. I have seen that before. Drop the tank and pull the pump out to see if there is a baffle floating around, it is supposed to be attached on the bottom of the tank. Haven't seen anyone inventive enough to reattach it so normally its a replacement tank to fix it.

.. a baffle around the fuel pick up that probably came loose. . Drop the tank and pull the pump out to see ....

Well this explanation did come to my mind, indeed....but I'll have to live with it. My wife is eager to have a newer car so the price of the new tank...over $400 with taxes...it not worth the expense..keeping it filled up makes for it. On the other hand, the conditions here make corrosion such a problem that when I tried to uncrew the fuel pump unit 3 years ago, the first screw just broke at first try...and the rest would do the same, so I take the explanation for granted...

:banghead:.....the fuel has melted the epoxy.....I'm surprised because I has done the same cure on a bottom leak years ago and it has held since.......so I'l go for a new tank..eventually my son might keep the little beast anyway so that is not a total loss.....

..well no.....my tank repair had held OK....the fuel return line from the regulator was corroded just beside the fuel tank and threw fuel to the side of the tank.....I replaced the line and the fuel stays where it belongs now.
I had tested the fuel line to the regulator..the one that holds the presure....but not the return line, that carries almost no pressure. WHen I filled the tank up to 3/4 , the tank level was higher than the line...and fuel was siphoned from the tank while the vehicle was at rest. THis did not show all the time I had kept the tank low....

Pressure line also replaced now. At last, will it keep its fuel inside ?
I cut both original lines at front door level, keeping about 2 feet original in perfect condition and used copper as replacement for the rear section to the tank. SIze is 5/16", both steel original and copper replacement, making for easy joining .

there is a recall on the fuel tanks for corrosion in the US. I assume its the same in Canada also. Recalls never expire on safety issues like this. It might be worth checking on @ your dealer

there is a recall on the fuel tanks for corrosion in the US. I assume its the same in Canada also. Recalls never expire on safety issues like this. It might be worth checking on @ your dealer
Yes I have brought the printout of that recall to my dealer years ago and no way, KIA CAnada will not comply though the amount of salt used here in winter exacerbates this problem. THe only case I know where the tank replacement was done is a fellow in Ste Catherine Ontario who had a Sportage that was recognised as sold in the USA originally.