About a year ago, I noticed that my car would no longer shift well from 1st to 2nd (toploader with stock shifter). I just couldn't seem to get it in gear. The problem was worse when cold, and got better after driving it for about 15 minutes. I took it in and it was determined my synchros were stuck to the gears and I got a complete rebuild. The gears were OK, so they were not replaced.
After the rebuild, I still have a problem shifting from 1st to 2nd when the car is cold (not cold weather). Problem goes away after about 15 minutes of driving. The car didn't used to have this problem in years past.
My mechanic who did the rebuild says nothing is mechanically wrong with it since it works well when warm. He also confirms the shifter is lined up and positioned correctly. He states the problem should go away after breaking in the tranny and getting everything matted up correctly by using it. It's been a couple months of driving and it's not better (this was last summer/fall).
Should I change to synthetic oil, or try something else.... Any other thoughts? Is this normal?
Thanks,
Troy