Wow, slow down before taking it off or modifying it. Older bows tend to have big fat grips which are very easy to torque. Newer bows tend to have very small/thin grips, which need to be held different.

By open hand, if your fingers where pointing straight ahead,, as I see alot of people doing, you ARE going to torque a bow with a small grip. The fingers should just sort of hang loose and the grip should sit between your life line and thumb, sort of on the meat next to your thumb knuckle.

A new bow might want a different grip, if you are getting torque free with a slightly changed grip as you say, then you probably found the answer.

--Bob