I've noticed this with all of my diy's. They start off amazing after you set the tensions and lube, but after a month they get harder too turn... This has happened with 2 of my C4U diy's and my friends Type c. I lubed them with jig a loo. When i take it apart I see lots of white powdery streaks on the cubies. I wipe them off and it barley get's better. And solutions?