It's a two blade aluminum Sensenich. I don't know it's history. Climb is good, but cruise is not that great. At 8500ft I get 2450rpm and 160mph. The original TCDS numbers for the E2D were generally calling for 2260-2270 to 2360-2370 static, I get 2190, and I believe the electronic tach. The 6A airframe flys straight and true, the rigging is correct, the aerosport engine has about 150hrs on it, but somethings not adding up. Am I expecting too much? Am I pointed in the right direction, or should I be looking elsewhere? Engine tuning, other?