my 66 c4 trans is leaking at rear where the driveshaft goes in. i put a new gasket in it last year but still leaking. could it be the driveshaft yoke where the problem comes from. maybe pitted. 2nd issue is pan gasket. have taken it to transmission shop 3 times to cure the problem and they have replaced the pan gasket all 3 times but still leaking at the back. wet all across. don't see anything coming from above it. they said last time i may need to replace the pan itself cause maybe it is warped. so i am inclined to buy a new pan for it. while i am at it a non related problem is the rear end has a slight drip to it. i am use to being able to take a rear cover off to fix with my camaro (i know bad word for this site lol) to fix but ford has no cover. looks like the guts need to be taken out to fix it. looks like a job for the professionals maybe? it is leaking from the seal that the gears are bolted into. not anywhere else. thanks for any help.