Soon I will be trying to learn to play the double bass on an old 3/4 one my school has(although there are no instructors or people I can ask questions of). I'm about six feet tall and I read that the nut should be about eyebrow level with me, however it's at least a foot lower than that. The endpin is a 1 inch, non-adjustable metal spike, and friction fit in the bottom. I don't plan on becoming a master, but I don't want to hinder myself or or cause unecessary discomfort. Any suggestions on what to do? Sitting? Is it alright as is? Do I need an endpin stop?