I agree Bob, but I do wax my string & serving frequently. A little wax rubbed in the string and serving does as much (or probably more) good as a huge glob of wax smeared on the outside and not rubbed in. My check for excess wax is to inspect the belly of the limbs after a shot or two after applying wax. If there are splatters of wax on the limbs I feel like I either applied too much, or didn't get it rubbed in well enough.If it doesn't fray...I see no point in "gooping it up" just for the sake of it.
I have always waxed the string and serving and some servings seem to last forever while some don't fare so well. I think it's more a matter of how the serving was initially applied (like serving with the string under extreme tension after it has been stretched for some time) than the use of wax on the serving.
Boo's strings are by far the best for serving life I have ever used. To be fair to Gustavo (GAD), I haven't tried one of his strings yet so I can't compare them to Boo's.
Try as I might I just can't get my own servings to hold up that well. Guess I need to build a jig to stretch the string, and probably switch from the BCY crossbow serving. I sometimes wonder if the standard crossbow serving diameter is just too big to prevent separation?