Now the weather has become colder, by gearbox is showing some problems when it's cold. Shifting between 1st and 2nd is hard. It doesn't really want to come out of 1st and when going into 2nd it's then like the synchro is bad and it will grind if I try to push it hard without giving it time. When everything warms up it's fine.
When I had my clutch changed I know he changed the gearbox oil but I'm pretty sure it wasn't VW oil, just some generic synthetic oil. Could this be the problem?