jaka, Thanks for the reply on the Dzus size question. Yes, the ones I have are almost twice the size of yours. Mine have an almost 16mm head and use 2mm springs. I dug out my box of left over racing Dzus fasteners to measure them and found some smaller 7mm head different style fasteners we called "jet locks" that I may be able to use on some larger models. I had forgotten just what all I had in that box till I dug it out to measure. Thanks and smooth landings to you.