I am a newbie so I apologize up front. I'll try to be precise as I can. I have a JD90120 80w with servo motors and MPC 6252 controller. Changed laser tube yesterday and now i can't even cut through 1/8 Masonite on 15 speed and 100%. I have tried aligning the mirrors and changing them but the laser comes out to the left 2.8 mm from the nozzle. Also when I used masking tape to spot the laser( I place poster board behind it to protect mirror) the laser dot on the third mirror seems wide.its an extremely dark with charring and not much inside the circle. When running test of laser, laser time set at 340ms and a power of 20% 4 short blasts make it through 1/16 plywood but when Running a 25mmx25mm box at 15 speed and 100 power doesn't even make it halfway throug. Any ideas or advice?