I've got a 2nd hand Scepter III that I'm having trouble with. Can't seem to achieve consistent groups. It feels to me as though the string and cables are not nearly as taught as they should be. I own many compound bows and all of them are strung much tighter. I've checked the draw weight and it's right on at 60 lbs (bow is rated for 45-60lbs). Also, the draw length seems to have increased all by itself. I'm wondering if the string and /or cables have stretched.
I've tried finding the spec chart here on Martins Website but I'm not sure how to read them. Trouble is I'm not sure what cams are on this bow or what year it is and there is no mention of a Scepter III in the listings from what I can find.
Any help with this would be greatly appreciated. Thanks