Hi In yours experience how many holes I can make in my belly air brake and which diameter. Thank you in advance for the answer. I've tested my KR2 with a passenger on board at take off weight of 483 kgs ( about 1063 lbs.) and C.G. at 26,9 % wing chord. Ewerythig OK but now the pitch is VERY sensitive. I've landed with some difficulties with 15 kts of wind not exactly in axis ( cross??) but i can use again my plane :-))
Ciao Franco Negri KR2 I-KRFN Italy

