Hey all just started having this trouble where my wagon is jumping out of 5th gear, has anyone had this issue or know why it would be doing it?

TR

there are spring loaded detents that hold the gears engaged and there is also a detent ball on the selector rods in side the gearbox, you probably have a broken spring clip in 5th gear meaning the gear isn't held engaged, you'll have to remove and disassemble the gearbox to fix it.