[1CivetDei2]

This 318 i might be buying has this issue with it the owner says at high speeds when downshifting from 3rd to 2nd it completely misses 2nd gear. He says it has something to do with the synchronizer and he made it seem like an easy fix. Exactly what is the problem and am i going to have to buy a new synchronizer or a whole new transmission or this an easy fix i can do myself with some parts.

Thanks