Thanks, Chad. The FF Plus string is on a recurve not actually rated for modern string material. However, this bow has "beefy" limb tips, smooth nocks and grooves. I've been watching the tips closely and so far, so good. I know another gentleman who is shooting a modern string on the same model bow for some time now with no ill effects. To be honest, this bow always felt so good in hand to shoot, fit me well, but was a wee-bit of a dog in cast/speed. Not super-slow but just didn't have any "umph", if you know what I mean. I put the aforementioned FF Plus string on it because it was just not getting shot much with the B50 string. Man, what an awakening! It was like spraying some nitrousoxide on that bow. Totally different shooting bow as in trajectory/cast/speed and "umph". I cant put it down now.