IH 424 Stuck in reverse

[IntHarv]

I have a IH 424 and was out mowin and was backing into a stall by the barn. When I went to pull out the engine died. Somehow the trans is stuck in reverse and I cant get it out. I am able to slip into 2 3 and 4 but when i let off the clutch the engine struggles and tries to quit. I can still select H and L gear but no matter what I'm in reverse. I cant physically move the shifter over all the way to the left to try R or 1 but any time the shifter is in the N position Im in reverse. Fluid is filled to level plug as manual says...Just converted it to vertical exhaust and fixed some electrical problems and has been running perfect last 3 days. But now this!!
Any Suggestions??

 

[Bob]

You MAY be able to remove a pin through the base of the shift lever, and lift the lever out, and drop it back into the proper place in the shift rails. Otherwise, the tranny top will have to come off, to see what's wrong.

It COULD be a broken shift fork.