Technical Gearbox Problem

Thanks, I just wanted another opinion on things before i started down the wrong path.

Plan for this week is:
Monday, refit clutch and gearbox.

Tuesday: Rebuild car to a working state, fill box with oil etc.

Wednesday: Test gearbox and car. Cry or Woop that ive sorted/not sorted it.

Thursday: Remove gearbox from car.

Friday: Pop open gearboxes and start to remove bearings from them both.

Saturday/Sunday: Put my old AP clutch on the car (provided the gearbox works, will test in the week with the brand new clutch to avoid introducing more variables) and then refit newly built coupe turbo gearbox. Im not junking a £180 clutch kit if i dont have to! The other can sit on a shelf as a spare for when i need it.
 
Got the gearbox on the car (twice, forgot the clutch release bearing first time!) then rebuilt it to a state so its on wheels now.

Just needs filling with oil, the boost hoses popping on and the battery connecting up tomorrow.

So i should know tomorrow night if its the flywheel or the gearbox at fault!

Can remove and refit the gearbox quicker than the book time working on my drive now ive done it that many times! (3 1/2 hours)
 
Got it all back together and working today.

Used my old friction plate, pressure plate and flywheel. So i have a spare brand new MGR clutch.

Fitted the Type B diff into the coupe gearset/casing which i tested as a complete gearbox before i even opened it in the week.

Put it all together.

Works perfectly now.

Guessing it was broken gear selector mechanism / selector forks or syncros. For what it would have taken taking it all apart, all the syncros off the shafts etc to find out it seemed like way too much hassle, just changed the gearset out for a known working one.
 
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