my rex does that too..... ok you know the main part going to the tranny!!!!!! there is a bolt or a pin going through that...if you have a pin take that out and put a bolt and nut through it.... thats what i had to do and it only takes like 10 mins to do it..... then thats your problem fixed
that is how i did it atleast there might be better options out there but that is what i did and it worked sooooooo..... thats my advice
that is how i did it atleast there might be better options out there but that is what i did and it worked sooooooo..... thats my advice