I agree with Glenn but, it seems that the temp might be a little high at 3500 RPM's. I have the AD-41P and I run a little cooler at 3500 (about 190). I know it is a total different engine so probably nothing to worry about. Especially considering the weight of these boats when loaded with 3 passengers, gear, and full bait tank. I also do not push the boat past 3400 RPM's but, I feel that I can comfortably run at 3600 RPM's for some time without overheating. I'm running A-4's and they seem to be perfect. If Glenn is offering to let you borrow his A-4's it might be worth a little experimenting.

Good to see another Blackman owner posting. See ya on the water.

Scott (Tenacious)