92 MBZ 190E 2.6 Auto Trans

My 92 190 was jerking when shifting, and making a clunk after backing up, shifting to drive and giving it gas. The mechanic rebuilt the entire drive shaft and the shifting was backt to normal but the clunk was still there. He suggested a transmission service, which didn't help. Then he said it probably needed a rebuild. $3000 later it still clunks and now has the added problem of sticking in 1st gear when taking off with a cold engine. He says this is normal. I feel like I could have stopped with replacing the drive shaft and would have saved $2300. Can you advise me if anything can be done about the clunk and now this new issue of sticking in 1st gear?