Now @Slestak75 is a different breed. He wanted the slimmer profile and extra response from the slim bearing but he refuses to sacrifice spin time. Instead he filed off a small bit of the bearing post and grinded down the side effects to get things to fit proper. He uses a dry bearing I use one that’s slathered in traxxas grease.
The reduced post and side effects admittedly do spin longer as there is less friction on the bearing than using a shim.
