Music Man do not use water slides (and never have as far as I know). The logos are silk screen painted onto the headstock. There are no official water slides available, anybody selling them is not strictly legal. If you contact customer service they can talk to you about having the neck factory re-finished. Otherwise, while you are of course free to do whatever you like with your own guitar, I think EBMMs official position is that they would prefer people only use their logos/branding on work they have done themselves.
Hi Arno5150-2,
Unfortunately, we do not offer refinishing services through the factory. We recommend you contact a local luthier who specializes in finishing services.