I've been working on an ambisonic microphone with four cardioid electret condenser capsules that are all very closely arranged together. The problem is that the mic connector wires are super close together and I worry they may short if the mic is bumped in the wrong way. What I want to do Is fill the cavity between the capsules with epoxy so that the whole thing is more rigid and safe. My question is: would filling the spaces behind the mics mess with the polar pattern of the mic? My understanding is that the mics have holes drilled into the backs of them to help determine their polar pattern and I need them to remain cardioid. Picture here of the project.