Barry
don't know how you fill about profiles,i can keep a mojo 40 in a inverted flatspin without loseing any altitude till the fuel runs out,just can't get it to do a rising flatspin,that is with a ys 63,very tight pinwheels.the omp ultimate is my favorite to do flatspins and tumbles with a saito 100 one great flying plane everyone that flies 3d should have one of these!
ENJOY!