Hey Dano… At first, I put red car striping tape on my violin neck. When I upgraded to the Vitale, I wanted to leave the tapes behind (EEK!), which I did; however, I still needed a reminder as to where to put my thumb. As you stated, and in my case too, my thumb lines up with my 1st finger notes…SO… I put a red dot on the side of the neck where my thumb goes. Without looking, I can feel the small sticker and know that my thumb is in place resulting in the rest of my fingers landing correctly too.