Hi NHE,
I will be in your neck of the woods with my Revo in approx 3 weeks. Will know more when witee returns home with the cast in mud schedule.
As to the fin adjustment, tight for speed, loose for power. Thats all there is to it. I keep mine as tight as they go. Assures even leach tension on both fins. As to peddling them, it takes a fet pushes to get going but the cruising speed and effort are noticably good.
My friend with the Big A has his set loose for power. At the same prf my boat is just a bit faster. lol
Val