RE speedo readings, I found the same...both the digital and the analog speedos were off by at least 2MPH. The digital was easy to reset (just dig into the menu...I seem to recall I had to be moving to make the adjustment). Spoke with my dealer just yesterday about adjusting the analog speedo and he said there's a silver knob behind the ignition switch for adjusting that. My boat is at the lake 2 hours south, so haven't be able to confirm that yet, but will this weekend.

Note: be sure you're not on moving water (e.g. river) when setting your speedos via GPS.

If it helps, we have the 345 surf engine and the larger ACME prop and have NO Problem getting out of the hole with 2200 pounds of ballast and a boat full of peeps and gear. For us, depending on the size of the board and the surfer, we get the best wake (port side) going between 10mph and 10.7mph, usually with ~half a wake plate. We fill an 1,100 lb bag in the port locker, 500lbs in the center tank, and 650lbs IBS in the nose (none in the starboard locker). This seems to give us the best wake. But we're new to it this year, so I'm VERY open to suggestions for making it better!

Steve
2013 Mojo