just noticed my dex210 glitching my first real track practice using a flysky gt3c re calibrated and it got worse then i noticed the antenna was bent exposing the wire on the transmitter i tried to fix it no good still , my 4x4 sc was working fine all day then broke a rear hub threw the receiver in the buggy re calibrated it to my #1 channel for buggy and had all my settings had to adjust a few end points and worked perfect , for now i ordered more receivers but i have tried the 4pl and i like it more then i reseached it now i plan to buy it