I hope someone can give me some advise as to why, after 130hrs, my 2004 RXP has begun to porporse at 60+ mph. At 67+mph it is uncontrollable. I have the VTS trimmed full down and it still porporses. Can't hit 70+ and maintain control. Hull, pump and sponsons are all stock. Intake is top-load Solas. I want to run with the big dogs but feel like a puppy at 60mph. Suggestions so far are to install a pump spacer/shim and ditch the top-load intake to eliminate the problem. I am hoping someone can help me identify WHY this is happening and give me other suggestions on correcting.