Hey guys, I got my O.S. .18 CV-RX finally for my magnum. But I am having a problem with the pinions and the spur gears binding so bad that I cannot move them freely. The O.S. .18 CV-RX came with mounting spacers and I was just wondering if you guys have used them or not, could this be my problem. Have any of you had this problem. any help would be great I want to break this bad boy in