I had the wooden bearings in the rider roller of my 4T replaced a couple months ago after the old ones disintegrated. Everything was working fine until recently when I noticed that every time I drop my rollers to ink up (with the motor turned on) the top frame assembly begins squeaking and then slows to a stop. I don’t really know what’s going on but it seems like the rider roller bearings are too tight. When I remove the assembly and manually spin the rider roller it gets stuck. Prior to replacing the bearings it spun freely. But maybe something else is wrong. Any help would be very much appreciated.