Checkpoint motors use the exact same armature blank as a Ti or V2.....all three come from Sagami. They are no more likely to come out of balanced than another....
The Yok T6 is an old ass endbell Yokomo started using again.....We have used them and they pretty much do nothing.....except add weight.
www.teambrood.com , I stock pretty much every motor out there......don't have the checkpoint yet though, as they won't OEM it yet....
Later EddieO