I built a bastard pack using an extra set of XJ leaves. When taking all the leaves apart the plastic spacers/washers were pretty worn. I ended up not putting 2 of them back in on the passenger side. I have the sound of creaking, growling or grinding noise (hard to explain). I went to three different auto part stores with no luck. Anything I can use in place or do I need to go to the stealership do buy a few?