bosch colt trouble

ok has anyone else had trouble with the clamp on the colts for adjusting depth.. i set it and tighend the screw a touch and still slipped as i was running and edge.. like the size and power but the adjustment clamp is workin!!!! any help is apprecited could use duct tape each time

Larry
I had the same thing happening when I got mine. You need to give the motor a twist so that the fine adjustment threads in the base and motor engage.
Dan

thanks will try that tonight.