Originally Posted by rancherpete
I found that mine was improved quite a bit by stiffening the arms with 16MM CF tubing (siliconed along the bottom of each arm) but I too have decided to take the plunge and sleeve the arms instead. My materials will be here next week for this. I have been flying in very cold weather here in Colorado and find that the unit flies much better. The arms should be stiffer in the cold so I would think that this would improve things for you not the other way around. Also, the density altitude factor is working to my advantage as I am at 7,000 ft. MSL and get better lift in the cold. Good luck with it. We can compare notes after the "sleeve job"
I've been putting off sleeving the arms but I think it's time to just go ahead and do it. It might be in my mind but it feels like my arms are actually more flimsy than they used to be.