Gear linkage issues.

[Outriggr]

I recently had my mk3 in the garage to have a clutch and flywheel changed.
Every now and again in the 200 miles or so I've done since, I lose the top row of gears (including reverse)
You can hold the stick in and they work fine but if you let go, they pop out into neutral.
Bottom row (2, 4, 6) all work ok.
The weird part is that after a while, the top row comes back and R, 1, 3, 5 all sit back in nicely again.
Hope someone can help

[johnnyroper]

Sounds like a cable adjustment issue to me