Trans pan gasket..sealer or no sealer?? and other trans ???

OK gang, update time...

I used some copperseal brush on gasket sealer on the pan side, and flattened out the pan as suggested by cudamark, got it all back together..no leaks and filled 'er up with fluid. Took it for a ride...no noise. However... and thats a big however...she's slipping like a teacher on a banana peel in forward. Reverse she takes right off but i'm-a-thinkin' that the trans is gonna need to come out. I didn't adjust the 2-3 band, and I'll try it to see but I ain't holding my breath!! Thanks again for all the replies, Geof