Oberheim Echoplex Footswitch Momentary Switch Replacement Parts?

[Trevor Van Eyck <vaneyck@sympatico.ca>]

    Hi all, I'm new to the list, so forgive me if this has been covered 
ad nauseam...

    I just picked up a used Oberheim Echoplex unit (old White-face 
version with maxed memory and Loop IV Installed). I've finally got the 
unit working after resetting all the socketed IC's (it flickered and 
fluttered and powered up only intermittently at first). The Footswitch 
however has got faulty switches that need to be replaced (tried cleaning 
to no avail).

    My Questions are as follows:

    1) Has anyone got a source for the switches?

    2) I'm wondering if anyone has tried to install something more heavy 
duty than those low-profile momentary switches that come stock on the 
unit? I was considering a big metal plunger style switch (something more 
like what you find on just about every other effects pedal in 
existence). I know such a switch in the "momentary" configuration must 
be available somewhere... Anyone else done a successful switch overhaul 
on one of these babies?

    Any advice is much appreciated.

    Thanks!

    TREVOR.