Thanks Dnk for helping our buddy, another trick is to leave the ends of re-served sting long enough that you can re-tighten them up. I don't know what's involved w/ changing a string on a compound xbow, but in all seriousness, on an Excal it's a matter of a few minutes. They have a deal that slips over the limb ends, which you then "cock" the bow, which leaves your string slack enough to take off and replace. I am thinking maybe you could reserve your string w/ it still on the bow, there would sure be enough tension to make your string "thin", which enables you to get your serving tighter than doing it to a relaxed string, which tends to be "fatter". Hope this helps.