I have a DX-398 an would like the Anti-chuffing Mod. and also want to remove
the detent on the tuning knob, but I'd rather not do this myself, I tried to
take the back end off and even that seemed difficult to pry open. Is there
somewhere I could send the radio to do these modifications? Thanks

http://members.verizon.net/~vze20h45...n/909mods.html