Need some quick advice here. My 02 rubicon has had a motor rebuilt and new oil pump, etc but lately when it runs for a few hours and is hot on random occasions it will make a whirring noise like somethings slipping not grinding and I lose power when gassing it- mainly only happens in deep sand or mud when I actually need the power. Tried in electric shift and fully auto, same thing happens no matter what gear I'm in. if it cools off for a while it's fine again. From what I've gathered I was told to adjust the clutch but the Rubi is sealed wet clutch Centrrfugal and can't be adjusted just needs to be replaced. I'm about to order every freaking partzilla part they list for the clutch and a puller off amazon as I need this thing fully operational in 7 days - Should I do that or just try the bearing first, etc? Or does that sound more like a tranny problem?