5th

Original van was a 2009 T28 1.9 BRS (102hp) engine with a JQT gearbox. Campervan conversion and a re-map to 140hp. I'm sure it would pull a 'longer' 5th gear. I've been told the 5th gears are 'outside' the gearbox and relatively easy to change. Anyone done this? I know Darkside developments...

I'm trouble with 5th gear...It wouldn't select at all, replaced the shift segments and it now selects but jumps out as soon as you touch the throttle. The gearbox oil was low and from what I've read about others having similar issues, it sounds like the 5th gear cogs will need replacing. Checked...