HELLO I have about a 1 year old Ender 3 Pro. In that year I know i printed cpl things every week. I just installed a Extender 300XL kit. I noticed today the carriage wheels were "loose". I tightened the nut and then the wheels against the 4040 extruded. No matter how tight or thinking closest to the extruded, the carriage still seems to have a small movement it shouldnt. I wonder if the outer diameter of the carriage wheels are to blame. The printer is used hard. If I have to get new wheels, any type material I should shoot for?