Hi all, I love the feel of my tele but wanted a dirtier sound so I popped in an SD hot rails bridge pickup. I followed the schematic very carefully (red and white soldered and taped together, green and bare soldered to ground, black to switch). However there is now a very loud hum from my guitar. When the neck pickup is selected the hum is minimal but when bridge is selected (hot rails) its very loud. When I touch the control plate with my finger it dissipates. Is this fixable? I so how?