First post so hope this is right?

I have recently bought Leon 110 tdi, 04 plate, 71,000 miles, not from main dealer. Everything great apart from getting it into 5th gear is a bit of a pain. Every other gear is easy but it crunches into 5th unless I'm very positive and hold it into 5th as I bring the clutch up slowly. It never pops out of 5th once in. Seat Leicester took it for a road test as I hoped it was just linkage adjustment but the guy there seamed to think it was more likely to be syncro. (Ouch!) I've read on this forum about trying different gearbox oil? If anyone can help it would be much appreciated.

The car also pulls to the left a bit but Seat say Leon's do. Anyone else have this problem or heard of this?