i crashed my trainer a few times then i put the rx in a p-51 40 size with a os61sf on it it has about 30 flights till sat 10 flight than ailerons went full right at 90 mph the radar gun said so i have a lot of work to put it back to gather i wish i new that you can send rx back to manufacturer and have them checked expensive lesson on my part for 50.00 i can buy a new one in the future i will buy a new one send the crashed back to be checked before i put it in a nother plane thats my 0.02 cent worth