Small Stone Version 4 Vibrato mods?

[mikeford]

Hullo!
First, this is an awesome forum and I have gleamed much help! Thanks.I am in the midst of hotroding my small stone phaser. This one is the reissue number 4, with the whack square hole in the middle and the LED.
I have the 4 cap, uni-stone mod, split out the colour switch and have a killer new  art deco type case made o' brass
to refit. I will send y'all some pix A.S.A.I.F it!! Question, which resistor do I lift off the board  to add the switch for the vibrato mod?(r+#?)
THANKS!