Wow, that's some magical grease :smoka: slippery at first and sticky later, sorry I've never heard of that stuff. About the center bearing, there's a nut on the shaft directly behind the bearing, loosen that and then the shaft will be allowed to get extended and sort of fold or bend down at the center without taking any u-joints off.:smoka: I hope that catalitic is not too big, I don't usually have too much good luck taking off exhaust systems, the bolts are always seized and usually break on me, hope it doesn't come to that for you. Good luck!