My bearings are shot on my 650R. So, I dropped about $130 and got new swingarm and linkage bearings. Not cheap, but had to be done. Anyway, I go to take the pivot bolt out of the swingarm, and notice there is a locknut on the head end of the pivot bolt, and that you need a 20mm lock nut removal wrench, at least according to the manual. Has anyone done this w/o having to get the special tool? If so, how???