The DR1 I have was purchased from Glenn and was his flying display model for many years, so at some point it warped either from storage or differential heat? I built another one from his parts, by his design and used the compression "tennis racket" frame for storage and no problems and a couple of years strong. The Proctor N11 also started to warp, but I built a similar frame and no issues. I think the issue is going from hot summers to cold winters and basement storage?

Rhinebeck can spoil you, want to build a DVII and need to measure something? Just get in the car and drive a half hour and take all the pics you need! The event itself is a "yearly don't miss" for my family and I.

Regarding the N11 on the ground, a friend of mine greatly helped my ground handling by pointing out that I had some play in the rudder cables. I put a turnbuckle on one side and tightened it up and that made a great bit of difference. You still need to be on top of it on take-off, but not bad. I don't spend much time on the ground, get it in the air directly. Once there she's a real pleasure, one of the easiest bipes to fly I have. Landing is like a DR1 in that you want to minimize roll-out and get the tail planted ASAP.

Whit