2") MODEL 3600BR for what i thought was a bargain price of 35 pounds but after using it today to cut some kitchen worktops i noticed quite a lot of sparks coming from the top of it, the deeper the cut or more strian on the motor the larger the sparks. Does anyone know if this is a easy fix or it the old boy on the way out? any advice will be greatly appreciated as i am not very good on the technical side of routers love using them though the most versatile power tool known to man.:fie: