Hey Sic
I had forgot to answer your question about the clearance issues. The robart 2.5 have a width of 7/8". You will want to stay as close to this as possible for the front because its tight quarters in the nose area. The robart mains were 3.75 and 1 1/8" wide. These are not as critical as far as the width is concerned but you should still stay close to this measurement.

As far as struts and retract mechanism, robart part# 631 85 degree mech. with 1/2 inch struts were used on mains and 7/16 offset strut was used on front. I do not remember which one they considered left and right offset but if you were sitting in the cockpit it would need to offset to the right side with scissors facing rear. I believe part# 661 that fits the 2.5 wheel.

thanks
chris