Increasing Distance for LP

I am working on a LP prototype for worlds and I am having problems with my LP not should enough distance even with 3 #64 on each side. What should i do?

How far do your elastics stretch back at min and max drawback distance?

Maybe 4 inches

I would suggest having them stretch farther than that.
Our elastics are stretched 6" while fully forward, and the get pulled back another ~3.5".
You could also continue adding elastics, but I wouldn’t recommend that.

Check out this thread. Changing the ball contact distance is the key to increasing range without adding more rubber bands.