I too am looking at the slick tricks for next season. I have heard and read nothing but good things. Search this forum about them it's pretty popular topic. I think I read somewhere that having 4 blades and 3 feathers/vanes will not cause any problems.
I've had no problems with slick trick 100s and the stock 3 vaned gold tips I shoot. Shoots right with my field tips out to 60 yds. I learned the hard way that you must using different aiming points even at this range!
It's impossible to kill anything with a four-blade head and three vanes. Never, ever worked. I suggest you send all those heads to me before you hurt yourself. :-)
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Never trust a bow under 40 (inches).
The average man seeks certainty in the eyes of the onlooker and calls that self-confidence. The warrior seeks impeccability in his own eyes and calls that humbleness.