Hello, I have a quaife sequential with straight cut gears to a k24 engine. The car ran fine through most of it's tuning, but towards the end is stuck in 5th gear. Car on/off, clutch in/out still stuck. Removed shift cable to push directly on the shift mechanism, but still stuck so I dont believe it's the cables. Anyone have solutions to this problem. Trying to troubleshoot without removing the box from the car. Thanks for any help.