I personally would send in my RX, have them replace the antenna and retune the RX. If you change the length of the antenna or change the resistance, impedence or anything else....it will change the tune. Probably not enough to make a huge bit of difference...but enough that it will be always be a throught in the "back" of your mind in a crash.

But thats just me.....too many things already to go wrong on a good day.