Resurrecting this rather old thread, the varitone (Epiphone) switch that I ordered from Guitar Fetish wil not fit thru the "F" holes
- needs access thru a rear opening. No big deal as the stock circuit is still working.
I also mentioned somewhere that I had seen and heard of ARIA ES users who had swapped out the tun-o-matic bridge for a Schaller roller bridge with noticeable improvements in tone. I was just recently able to obtain one of these (after "thinking" about it for over a year and a 17 Euro price increase) from someone who misordered one (they are available as "standard" and "reversed" - pertains to the orientation of the intonation screws). It was the correct one for my ES, and at less than half the price. The only extra that I had to buy were the 8mm posts (the unit comes with 4mm plus inserts). I'll probably get around to swapping things out next week.