To follow up. WOT this weekend was 35 mph on phone GPS @ 3900 rpm. The secondaries seemed to open fine and the dizzy was advancing from 10* to 24* with a little rev (I didn't get too specific here because it seemed to be advancing consistently). The throttle linkage also opened the throttle on the carb fully. That speed felt pretty good for skiing. I'm thinking there should be a little more in this boat, but this is good enough for what we do. We are running an OJ428 4 blade 13X15.5 RH XMP prop that was refurbished by OJ last summer. Maybe we could change that when this prop gets banged up (the river is running at 28' over right now, but it will settle back down to 0' over, and 4-10 feet deep in a few weeks, so props tend to get abused even if you are careful). Maybe we also get a new set of points the next time I need to order something from Vince.