I purchased the Cognito PISK for my son's LLY since he put the new wheels and tires on. Tried to install this weekend, and could not - just not enough thread left on steering box stud to add Cognito bracket. Basically would have to eliminate lock washer to get nut started on threads. Did some reading and found a few posts about not being compatible with the Moog HD arms. Wondering if any of you guys have run into this. Should I go back to AC Delco arms? Forget about the PISK? Your opinions would be appreciated.