Yes they were machined by the manufacturer as I stated in our conversation. This is the way they are made. When they come out of the mold the one side is cleaned up.
Thanks
James From
PST Marketing
The sleeve in the bushing makes contact with the control not the rubber. The sleeves is there so you do not collapes the arm by over tightenting. It can be installed in either direction. That is not direction specific.
Thanks
James