I used an air chisel on mine also. That was hard. I also had a hard time getting the stock spindles off. But after i did the 2/4 the first time, and then went to the 4/6, the back was damn easy and so was the front.
BTW kyle, how does it ride with the toxic shocks on there? im not too impressed with my calmax shocks, but it is better than my stock shocks.