I'm glad I could help. Let me know what you end up doing.
I did this two years ago, and _nobody_ has been interested in it, so I appreciate the opportunity to blather on about it.
I also have a Stagg EUB, and they use a piezo wire, like this one: Piezo Coax
They put a channel in the underside of the bridge feet to seat the cable. This kind of piezo is also used for some acoustic guitar pickups. If the tabs don't work for you, this is yet another option.