My CMP hellcat has been flying for a few years now and still holding up well. Century jet are familliar with this model and supplied rettracts that work quite well. They do not completely fit in the wing but pretty close. No problems with reliability. I installed an RCV 1.20 with a Zinger 17 x 12 3 blader that has worked perfectly, looks and sounds great. I do use an on board glow but found that it still runs great when the battery is dead! Standard servos all round and a pull pull on the rudder to hide the ugly control horn provided! I also added a Robart mechanicle tailwheel to clean up the looks.