It's been a while i'm using a coupple of 1409 to steer an X-ray T3r and an Hyper10SC ,also have a 2015 in an Xray 808,never had problems,there's meaby a little more power consumption than other servo's but these do the job better than many others.
Good speed and a lot of torqe for the 2015.When i used the 1409 on the throttle/brake for nitro i had excesive speed so the carb was having to much air,i needed to slow it down from the transmitter in order to have it set porperly for the air/gas mixture.
These servo's are renamed Savox's with improved PCB.