Been out of skis since I sold my 1200 xll project 5 years ago , everybody was a massive help at that time . I just bought a 2015 FX SHO which we love so far but it seems to cavitate out of the hole , I pulled a skier the other nite and didn't think we'd ever get going . I'm thinking a pump seal kit and maybe an intake ? top loader or aqua vein ? I appreciate any suggestions and will these affect warranty since they are not a "real" modification of the ski .