RE: Serious Broadhead Problem
Two thoughts come to mind. You sound like you don't want to tune the bow, just screw on the mechanicals and hunt, which isn't totally unacceptable, and you would still have a relatively decent chance of killing a deer, but you're really not tuning the bow to it's best performance, if you do that.
For the MUZZY guys, I've seen some of the NEWER Muzzy's not be worth a damn. I've seen quite a few guys that one of the 3 head they'd gotten in a pack wouldn't spin true or just wouldn't fly right. I'll take my Eastman Titanium Sabre 100's over Muzzy's in all honesty, as I've had better luck shooting them consistently than Muzzy, and they have been 100% effective for me. I also have ST's that fly great.
To the OP, TUNE your bow to the best you can and you will shoot both BH's and FP's better!!!