I have an Ibanez EDA900 that has piezos under the monorail bridge(s). At one point last year, one of the piezos started to cut out right after the attack. I took it into the shop for a setup, and I received it back with the piezo working again. The tech had no idea what could have fixed it. So now ANOTHER piezo is out. I'd just replaced the bridge, but it's 90 bucks. MF has the whole bass for 299.00, so I'd rather fix it. Can anyone diagnose this problem? Or at least take a guess?