I am just getting back into HAM radio and purchased an IC-718. This last weekend with all the QRN, QRM and static crashes has convinced me that I need a good CW filter of the 400 or 500 Hz variety. Problem is, I called H.R.O. and they don't do any radio mods or repair. I live 3 hours N.E. from Phoenix, but they are the only HAM radio shop I know of in the Phoenix area or north. Can anyone recommend a good tech to do the mod in Phoenix or northern Arizona?