Ah... according to the Tower website, the GMS 76 weighs just about 24 ounces with the muffler. the OS 70 weighs 18.3 ounces and the Saito 72 is lighter. You are also going to need 3 ounces of tail weight to balance that extra 6 ounces up front. Let's be charitable and say that the 76 is going to make that Edge half a pound heavier than the 70 or 72.

If that doesn't bother you, go for it. It would bother me, though.

Jim