While trying to route out a slot, (one inch wide and 15 inches long and thru the 3/4 oak stock with a 1/4 bit), the burshing and cap blew out of the housing! :'( I was going only half the thickness of the board. Did I do something wrong? Cap is busted and there is a small burn on one end of the spring that holds the brush in. I'm going to try to see who could repair them around Tinley Park Illinois, anyone know of one?