Wing dowel wear.
After only 10 flights my wing locating dowels show significant wear, approx. 15 % of the diameter. The wear pattern is consistent with right rolling manoeuvers (who rolls left, anyway? ). Clearly, the gear bulkhead is too thin, causing high bearing loads on the dowels, probably made worse by soft dowel material. I am in process of reinforcing the bulkhead and replacing the dowels. I guess if my experience is in any way typical it will pay to inspect this area frequently. The only good news is that this wear is allowing the wing to move around and may be contributing to the airplane's atrocious elevator sensitivity.