Thanks for the input on going to the higher hp engine on the Model 4.

I guess if it is that obvious it would probably be even more so on my Kitfox since I'm dragging around an additional 200 lbs of floats, not to mention all the additional drag. I'm honestly surprised it is so significant as my plane even on floats is like a ro ketship compared to most other float planes.

Larry, did you install your Zipper kit by yourself? Did you do the 105 or the 115? I really like my 912ul, so I've been hesitant to install a big bore kit in it. But you got me thinking...

87 vs 92 oct fuel shouldn't be a big deal as generally I always buy premium fuel anyhow, as non ethanol 87 octane isn't easy to find.