Quoted from viperrwk:
Yep - went back through my old shop photos and it was the same for mine - no polyurethane on the right side. The interesting thing is that the manual calls for it on both sides.
I have often wondered if mine was the only one like that...I guess not!
I replaced the coils, springs, and sleeves on mine not too long ago...absolutely makes a difference in quality kickouts after you put the new ones in....well worth the $30-40 in parts.