Just got back from running my 25' World Class, and thanks to the wealth of info, especially from Warlock, it went great!!! It was a trim issue. I had to find it's "sweet" spot to get it to behave. Once I found it, I left it there, and the ride was AWESOME at all speeds, from 5mph - WOT!!! IT still has to break in to get up to full song tho... But, Carter @ Warlock said I'd know the minute it breaks in, it'll jump to 5000 rpm instead of the 4200 I'm currently running.

Thanks for all the help!
Tom

Depending on what kind if indicators you have, take a marker and make black dot right where your sweet spot is on the indicator. It can make quicker to find the spot in all light conditions without fine tuning the trim so much.