Good choice on the PC 890 series. Check the pole stop rod, make sure the knob on top of the verticle shaft is all the ways down. I found on my 895 that I had to tap the knob down all the way otherwise it would give variable depths of cut. Do not hammer to hard as it will surely break and then there's trouble. There is no need to have to push down hard when making the cuts, just guide the router and maintain control. Good luck with the router!