Blumax Ok so you have problems on landing, peter is correct check your c of g, but also how are your flaps deployed if you have them, if you do, check they are deploying at 85 degrees this will make the landing smoother and stop the aircraft floating on landing remember the flaps are mainly speed brakes on my 1/3 spit I only had the flaps deploying at 35 degrees and this caused all sorts of problems until I put them at 85 degrees anyway good luck.

Todd