have a torn CV boot - while attempting to remove the shaft i've run into a problem getting the A-arm to separate from the hub assembly. I've removed the cotter pin and castle nut but the a-arm just won't separate - tried tapping on it but cant get it off. I've loosened the bushing bolts (where it mounts to the frame). am i doing something wrong? any ideas? looking at the parts diagram it looks like there is a bushing at the end of the bolt??? can that be loosened? the bolt the castle nut was on is not straight up and down, it angles in towards the frame - doesn't look bent.