Hi Jacked69
I have the same DuBro skis and am waiting for the first snow fall. I would like to know some details from your installation because I believe the DuBro design will work great for me. My tail dragger main gear uses bolt on axles rather than the wire gear bent into an up-side-down "V". I assume you are using that type of bent wire gear. Is that correct? The skis must be secured to the axle so they do NOT freely rotate. A spring provided with the ski is used for that. I don't have the mounting directions any more, but surely the instructions covered your type of gear. In my installation I had to grind a flat on the axle shaft for a provided 'long screw' to bear against so the ski would not rotate. The provided spring engaged this 'long screw' and holds the ski from rotating freely. As I recall, the instructions were very clear for my type of installation. I believe I can help you if you will post a photo of the instructions and of the installation you currently are having a problem with.