Originally posted by Friend: If the marks on the side plate occur behind the rest (string side), the shaft is too stiff. If the marks occur on the shelf in front of the rest, it is too weak.
Originally posted by xtrema312: Those 250's are stiff. To weaken them more take out those standard inserts and put in some 100 gr. inserts. You can heat a field point and pull them. Just go easy on the heat and dunk in water quick when you pull them to cool the shaft. You can also hold a wet rag on the end of the shaft to help cool the shaft while heating the insert. I just pulled a couple inserts in some 150's. I hear you can also nock out the inserts with a drill bit and whipping the shaft hard. I have not tried that. Are you also paper tuning or bare shaft tuning to see if the shaft is stiff?
Originally posted by FarmerMarley: If the wear is on the outer edge of the rest it can be other issues. I just had a similar issue shooting my predator and finally fixed it. I was getting wear on the outer corner of the shelf and on the velcro. If your elbow is high at the draw or your string hand is pushing down on the nock of the arrow you can cause a similar effect to what you describe. Trying to tune your arrow or adjust your brace height and nocking point will not help if this is the issue.Have you bareshaft tuned? How do the bareshafts fly? If you get a nock high then that is another indication of the above-mentioned, form induced issue.Hope that helps
Originally posted by kunsangsean: I feel ya, having the same issue and it can be real annoying. On one hand its not a big deal, but I've been replacing the rest every 3-4 shoots to protect the riser, and I'd really rather not do that. I just sent my riser in to ron and mike to get a riser crack fixed, and am going to ask if they have any recommendations about the shelf wear. Will let you know if I get any good info.
Originally posted by jtrap5: I have a couple of predators, and have found that nocking the arrow above the nocking point has solved most of the shelf contact issues. The minor contact that is left would most likely be due to form and release for me.