You have the right arrow, but you probably don't have the right spine. What you ought to do is bare shaft tune your arrows. Gold Tips are ideal for this because they allow you to add weight to the front and back inserts.
For the same weight bow, 29" arrows, I use a 3555 shaft with a 145 grain point and a supplemental 20 grain weight behind the front insert. Which doesn't mean that's the right setup for you, as bows differ. But I'll bet your current setup is too stiff. So if you don't want to bare shaft tune, you might try using 145 grain points rather than 125 grain points. If that improves things, try the next heavier point up from 145 grains (200 grain?) until things start to get worse.