What are the differences between the MX II and MX IIA?
The compression struts (except the one at the wing tip) on the MX IIA, should be double wall. That is a 1 inch diameter tube with a 1 1/8 inch oversleeve. The MX II had a single 1 inch diameter tube compression strut. On the MX IIA there should be 4 compression struts per wing. 3 double walled compression struts per wing and one single walled compression strut (at the wing tip) per wing. The original MX II only had a total of 3 compression struts per wing. On the MX IIA the diagonal strut in the wing, the one near the root tube, should be double walled. Again this a 1 inch tube with a 1 1/8 inch oversleeve. The MX II diagonal strut is single walled. The lower wing flying wires should all be 1/8 inch for the MX II and the MX IIA. The upper wing flying wires on both models are 3/32 inch. If you upgrade from the MX II to the MX IIA you will need to replace all the lower wing wires, even if they are 1/8 inch, as they are a different length to accommodate the different style Tri-Bar Cross T
