Eeks, I've forgotten to put the craft file, here's the craft file! https://www./?8nv9qy67ij879x5 I had several Formula Kerbals previous versions past, and downforce seemed to work. When I removed the ailerons the craft flips at top speed back in 0.90. [EDIT] The real craft file is here! The FK-Plaen is just a flying version of it. REAL FK-1: http://www./download/2paq2pzo79pdu9p/FK-1.craft