Hi all, can anyone shed light where a TOTAN plastic 12 should go. I recently replaced all my ramps and as usual (!) I had a few pieces left over lol. I can't see to find where it goes (didn't take enough photos) and it appears to be a ramp guard/guide. Can't see it in the manual. I'll keep looking (it's a curved plastic around 4-5" long, 1/2" wide or so).