After 6000 miles I would take it in to the shop and get it redone. It will need new buttons or at the very least will need shims put under them to get the button to tower clearances within spec. Also the weights probably have grooves in the face of them and will need to be replaced. The spring may need replacing as well. The most important of all these is the buttons in my opinion. That is because if there is too much clearance the spider can rock as it moves up the tower and cause wear troubles. If you want to do it yourself then you will need to buy a clutch puller, spider removal tool, jam nut tool as well as having a torque wrench capable of reading 250 ft. lbs.
