how much lower?
If it's 2 inches or less then I wouldn't mess with it. I purposely gang adjust my sight so that my broadheads have a lower impact. I shoot for center lung (just as I practiced and shot 3D all summer) and if the deer drops a bit at the shot I have a couple extra inches to play with. If it stands perfectly still then I'm 2 inches below center with a great kill shot. I've yet to see a deer jump rather than duck at the shot.
I'm going to give the Shuttle Ts a shot this year and I have several muzzy 3-blade 100grain broadheads as backups, in case the Shuttle Ts don't perform as expected. The Shuttle Ts blade replacement should be easy, like the muzzys, which is a bonus. The rage heads, at least the ones with the screws holding the blade rather than the pin, were a pain to change. Sometimes the screw wouldn't back out. Otherwise the rage heads are devasting, just a little costly. You might try the Rocky Mountain Snyper, same design as the rage at $6-8 cheaper per 3
Good luck.
