I have used various reversing "Y's" over the years and have not been totaly satisfied with any of them. Some are temperature sensitive , some are voltage sensitve and some just do not maintain centering . On some planes small variances are almost unoticed in flight, on larger aerobats
(27% and up) those small variances are extremely noticible .
The best solutuion i've found is the JR matchbox , no floating contols , centerpoint and endpoint adjustible (needed - if your not a very precise on your linkage geometry)
So if your happy with your current TX and arent up to purchasing the newest in Techno-Wonder Transmitters go with a Matchbox or the Futaba
Equivelent .
I'm not trying to push JR products , in fact I'm a die hard Futaba man . I've been using the matchbox since they came out , and Futaba didnt have an equivelent at the time , they work so good I haven't tried the Futaba version .