Well this nice illy bowl head for my tube is great. The only flaw is the three holes at the top get clogged easily. Anyways using various concentrates it seems like it needs a cleaning. The problem is i feel there so much money in the concentrate still left in there, It seems to come out of the little holes as straight oil. Like medical oil. The bowl also has an illadelph logo on the outside that i don't want to ruin sitting in purple power/simple green etc. . . With those that own this product, what do you use?