Finally.. im getting around to working on this mod.
Im in the process of building the 555 timers.
It seems those of you using the 100k pots in the cicuit were finding
that they would go too high to be useful, I'm starting with 50k pots,
I suspect it will take some fine tuning to get them optimized.

What's a good point on the board to power the 555's with

It's great to see that you guys have done such great jobs with your
707's. Hopefully i'll have some new info to share before im done.