My first thought is that whatever works is fine for some, but I like to look at things with a slightly more critical eye.
Therefore, my next thought is if you are mechanically sound, and can hit your target consistently, why would you want to change weights and get away from the sound consistency?
Perhaps a lesson to get you more sound would be in order...last time I checked, you have around 9 boards to hit to pick up the 10 pin, for instance, and if you are sound, a 9 board target should not be a reach to accomplish. Good luck in solving the problem and whatever you decide, I hope there are more spares in your future.
Just my opinion, I could be wrong, but I doubt it.