I made a Gatsby twist pen from PSI for a customer, but it seems to have a tighter than comfortable twist when the tip is protruding and retracting. It works OK but just not as easy and fluid of a twist as I would like, especially having the twist mechanism at the clip end of the pen so there's not as much of a grip. Has anyone else encountered a problem like this and is there a solution? I would appreciate any help with the issue! Thank you very much.