Hi I'm having trouble selecting 4th gear from 5th I thought it might of been a broken bias plate or springs but it looks like the previous owner has replaced it so am I right in thinking it can be adjusted if so how?
I guess the tin box with the screws in has to be removed to access the plate to adjust?

This is my first landrover Discovery already I've replaced the alternator,water pump, p gasket and breaks on front. I need to do some welding and remove the carpet because the foam stuff is soaked but love owning it and are easier to work on than jap cars lol