Rather urgent EDP footpedal question

[Andre LaFosse <altruist@altruistmusic.com>]

Hello all,

I've been experiencing an anomaly with my EDP footpedal, and am
wondering if anyone here might have suggestions on what to do at this 
point.

The problem is:

When tapping the insert button repeatedly and quickly, the EDP
occasionally goes into multiply mode, and much less occasionally engages
Overdub.  Also sporadically, Multiply will be completely un-responsive
to the footpedal hits for several seconds at a time.

This is defintiely an issue with my specific pedal; I've used a friend's
pedal with exactly the same technique, and it doesn't happen at all. 
Neither does this happen when using the front panel buttons.

I've replaced both the Insert and Overdub switches, which makes no 
difference.

The bottom wire linking the connections for all seven switches has been
replaced (with non-resistant cable), and it doesn't make a difference.

The resistors have each been electronically tested, and a new resistor
(accurate to within .05 of the standard value) installed on the Insert
button, which makes no difference.

At this point the only conceivable thing I could think of would be to
replace each of the resistors on the EDP, which I'm prepared to do, but
I'm wondering if anyone else has suggestions on things to look for/test.

The other alternative is buying a new footpedal (assuming I even CAN buy
one... does Alto have them in stock right now?), but I'd certainly
prefer not to do that unless I absolutely have no other choice.

The EDP is basically unplayable for me in a standard manner (or at least
MY standard manner) with the current footpedal problems, so any
insights, suggestions, or footpedal donations which could be offered
ASAP would be greatly appreciated.

Many thanks,

--Andre