vince, glad to hear that their are other " survivors". sure gets your attention doesn't it. I didn't mension it,but i also upgraded the linkages and sealed all the the gaps with clear monocote before the first flight.I do this as standard procedure as it sounds like you do also.My su31 is the one pictured at the White Knight Wing Protectors web site (www.wingprotectors.com). Thats also my pitts. Love those covers. Check them out.What engine did you use? later, ram3500