RE: Help! De Havilland Sea Vernom - Tip stall
Hans
I suspect your plane is difficult because it is heavy. the Grumania web site says it should weigh 10 Kg and yours is 2 Kg heavier. The p80 is very capable engine but is heavy. Swapping the motor for one of the new smaller engines like the new Jets Munt Vt80 would make significant savings. I have found that adding a ACT fuzzy pro gyro to the ailerons can delay the tip stall point on difficult models. You could try one and see if it helps.
John