I got a S&A, 14 lbs, drilled pin about 1 inch from ring finger (above and to the right), mb about 2 inches down and left of thumbhole, obviously I want it to be more aggressive, it's not turning like I want it (prolly cuz of the drilling), I want to know if I have to get it plugged and redrilled, or if I can maybe use a balance hole to increase hook? If I do have it redrilled, will this ruin the ball?

I would redrill it.
I haven't seen many people put the MB to the left of their thumb.
It tends to smooth the ball out. Just my 2cents