I've been following this issue also for a while as I have the TF 1/7 P-40, I have had Wingspans- sent them back for the above reasons, Robarts - junked them after collapsing all the time and sonic electric, also junk. Finally broke down and bought the Sierras and they are worth every penny. When you consider I have spent countless hours, and over $100.00 in parts replacement because of inferior landing gear it cost me money in the end . The saying " the bitterness of poor quality lingers long after the sweetness of a bargin is gone" is so true. To me the weight issue is really a non issue since the plane flies fine at 12lbs with a DLE 20, but I am staying away from buying the Corsair and Hellcat because of the rotating gear issue. I guess since there are really only 3 aircraft with this type of gear the manufactuers don't see a whole lot of sales $ in it for them.
