Slow hesitent acceleration

Hi everyone...I had a cylinder one misfire, changed plugs, wires and the 1-4 coil pack since it was not working correctly. I'm still getting somewhat slow hesitant acceleration from first gear into 2nd from there seems to accelerate fine. We checked my fuel pressure and was within specs. Tach is running better now however will drag "sometimes" when going up hills or quickly accelerating..I'm beginning to think this may be a TCC lockup going on? Any suggestions?

1997?

Use Oem plugs? Check coil output of all six cylinders? Check backpressure?

Last time fuel filter replaced?

Check for codes?

Yes AC/Delco Iridium 41 101 with stock wires...Will test the remaining coils thanks..

Forgot to mention I replaced the Cat last week...