If you are talking about the "wrap" that keeps the spring pack in alignment, there should be from two to four per side and they are usually not bolted but rather "folded" together as there is little load on them.
If you are talking about the end of the spring pack "main leaf" (either end) that wraps around the bushing that in turn bolts to either the frame or "shackle", perhaps you have a cracked leaf or a fatigued spring pack.
If something attached to your leaf springs is "digging" into your frame rail, you need to look at your springs very carefully, your tire pressure, your loading of the coach re: that side or both sides etc. Something is amiss here and pictures would help a lot.
1998 Gulfstream 36' Sun Voyager Bus Platinum