I shoot Muzzy's with a stiff spined arrow out of my 70# General , and experince little planing but my group is so good i cand shoot in the same spot cause it tears stuff up..I have also shot the slick tricks that were very easy to tune but i didnt like the small cutting diamiter compared to my muzzy..I would like to try the MUZZY PHANTOM, have heard good things about its ability to tune like a FP..
Good luck with your find,
-NICK