Try going up to 100 grains tips and see what they do. One thing for sure, a dozen 100 gn tips cost less than refletching your arrows. They might run your 5575's out of their spine range though.

The reasons I suggested feathers is threefold. One: You're curing your FOC problem by removing weight from the tail end of the arrow instead of adding weight at the tip, so you'd avoid any potential spine issues from the heavier tips. Two: feathers flow through WB's easier than vanes and lose very little speed from passing through the bristles as opposed to vanes. Three: Lighter arrow weight = faster arrow.

Add the speed gains from less interference with the WB and the lighter arrow, combine that with getting the bow tuned properly, and you could be looking at as much as 8-10 fps or more.

Normally I'm all for increasing tip weight and overall arrow weight, but not in this case. In your situation, I think feathers make more sense.