Recently purchased new boat. 04 Tr20 with a 225 pro xs. I put a 4 blade 25p trophy plus on. Prop was blowing out badly on hole shot. I put in all 4 solid PVS plugs. Hole shot improved however still blowing out on tip over and im not getting a good enough bite. I ordered the mercury cavitation ring to help with the blowout thats caused by this small hub prop. My question is do i need to remove a couple plugs or drill them outv a little once i install ring? Or can I leave the solid plugs in? Ive never had to tune a prop for holeshot. Where is a good place to start?