hello fellow xray runners i had the same trouble i had to do a full ball diff rebuild one club meeting my mate that runns in stcc he told me to go get a gear diff spec r do a 34t one but i sergest convert the car to 38t and on middle pully 20t then you can runn the xray gear diff the xray gear diff is so much bertter then the spec r one iv got both diffs now just gon to the xray iv seen the diffrence and useing the 38t diff and spole will make the car alot smoother so will be win win
