Hi Bryan,

Thanks for your comments and I understand your desire to keep your lead in bipe design.

You make some good points re the setup of these models as they come from the manufacturers and the fact that we need to tweak them to get them to fly right. I also agree re the pros being able to fly anything and make it look good. A good F and or Unknowns setup isn't necessarily going to be the best setup for a mere mortal to fly through Ps!

When I decided to try a Contra bipe it was with the full knowledge that it might not work out or if it did might still end up with some issues. Luckily I have a very good mono/Contra setup to fall back on so can afford to experiment with the bipe.

Oh and btw as a hydraulic engineer used to working to 0.0001" ( yes tenths) I'm happy searching for 1mm on these wings!

Malcolm