I agree with Strider, you can't have it both ways. The drilling you have now (1:30 label/label leverage) will give you more length in the body. On heavy oil the ball will go too long before hooking. Plus, with the pin over the fingers, this acts like finger weight, giving you more length. So you'll need less length in the body to increase the hook on the backend.
I would suggest redrilling the ball with the pin just under the ring finger with the CG kicked out 1" more, i.e. 4 1/2 x 3 1/2. This should get the ball rolling heavier in the body, waiting/wanting to hook when it hits some friction.
With the dull surface, if you feel the ball is burning up and not carrying, then lightly add polish until you get the desired result. =:^D