So I have an issue with cavitation upon acceleration. Seems to get fixed when I replace my wear ring for maybe one run then back to garbage again. I've used oem and aftermarket with the same problem. I just removed my pump and noticed the wear ring was loose and I could pull it out by hand. On my 2005 gtx wake it has two set screws that go through the plastic pump housing to hold the wear ring. The RXP metal pump housing does not. Attached is what the service manual says but it is vague. I was thinking of drilling holes into the metal pump and adding set screws. Has anyone done this before? Any advice would be great.