I've been having problems with my driveshaft from the transmission for some time now. The seal was originally leaking, so my mechanic put a new one in, then one day I was driving down the highway doin about 80 and went to shift into 4th from 5th and completely missed and went into 2nd. After that the tailshaft seal was redone again, with a stronger seal that held a lot better. Long story short, I ended up replacing my transmission with a new transmission with only 4k miles on it, and this morning I did a 30 roll on the highway from 2nd and now my car is smoking again from an oil leak in the driveshaft, from the tranny. This issue has been goin on since august, and I would really like for it to be taken care of asap but idk what the problem is.