I was at a drift event and shifted from 1-2 on the rev limiter without letting off the gas and heard tremendous pops and grinds. At first it stayed in 1st when trying to shift from 1-2, but after I tried to use the other gears it engaged 3rd and now only 3rd works. 1st and 2nd act like neutral. 4th, 5th, and reverse are locked out. It makes a whining noise now when running in neutral. Any guesses on what I broke? I am getting an OEM rebuild kit, Marlin thrust washer, bearing carrier, and billet 1-2 shift fork. Is anything else needed to build a strong R154?