If you are having trouble turning the wheel after getting it to the proper torque spec, there is more than likely something going on inside the bearing pack.
If you have an 88-02 blaster, there is supposed to be a huge inside grease seal, inner roller bearing, cone spacer, outer roller bearing, small outer grease seal, spacer/collar to seal inside the outer grease seal, a washer, and the castle nut.
If you have an 03+ blaster it should have a small inner grease seal, inner roller bearing, cone spacer, outer roller bearing, small outer grease seal, spacer/collar to seal inside the outer grease seal, a washer, and the castle nut.
If you are missing either the cone spacer (or the one you have is damaged) or the outer spacer/collar the wheel will be very difficult to turn and you could damage something by running it that way.