I did the mod several years ago but not on my rig. That resister is pretty
small and nearly flat to the board in terms of wire. Its been long enough that
I don't remember its exact location and don't want to tell you wrong. I'll open
my 570 and look but I'm not sure that's going to trigger enough memory for me.
I don't have eyes around to check it.
Tom
Tom Brennan KD5VIJ, CCC-A/SLP
web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html