Motor Plate For Clear Audio  External Drive Motor This works perfectly on my marantz tt15s1 motor...it is strong aluminum w felt bottom...it lifts the motor up about 2.3 mm and the drive belt will not slip off or your fingers touch the belt and move it off..now this is all equal i dont use any infividual feet spacers..reason is obvious but as long as the whole tt is even on any surface  thats flat..works perfect..i also recommend getting a nice strip plug that you plug the motor power cord into..turn the tt motor on always and use the power strip switch to turn table on and off..simple..no movement of motor....but i can gurantee my experience for the marantz..only tt15s1