That's why I don't use the stock tail wheel & hinges,especially if you plan on some harrier landings. For some reason I dont try flat spins much anymore, probably because this Do is a little nose heavy,one thing I like is inverted flat turns with the rudder maxed out,the turning radius is as small as 10' circle and I let it get very low. A rising flat spin is something I've never done,I've seen what it looks like,its crazy! Have you tried spoileron mixed to elevator with 45-60 deg. throw? I know this made a huge difference in how my plane harriers. I did have to add tri-stock to wing trailing edges & add in additional P-mixes to get the throw but looking back, it was worth it, it harriers quite well and looks cool because of the high angle,looks like its almost standing up. I fly mine in wind too but dont like to do harriers & hovers,too easy to get knocked out. I use a landing mix on the really windy days,a little up-spoileron to keep it from ballooning up on final,have it reverse-linked to elevator(when up elev is pulled,spoilerons drop proportionally). Let them talk,the flying speaks for itself! The Do rocks on!