Firstly to start I am a starter player at offstring but I had already played 1A , 5A and now I´m playing 4a. Well , I think this yoyo is a good yoyo for 4A and is very resistant but my yoyo is not sleeping too much , I throw it strong and it keeps to not sleep a lot . I think that there´s a piece of string inside the bearing and I think that remove the shims is a good idea for cleaning the bearing but I am not sure. Should I remove the shims(shield) or keep the yoyo like this ?(sorry for my bad english)
Yes, remove the shields to clean the bearing.