Howdy, I know it's not double bass... But I am wondering what the norm is for a violin machine head. My wifey just bought a student violin from musicyo.com and the machine head is a wood peg pushed into a hole in the head of the violin... and that's it. No machinery or anything, it just holds the strings by friction of the wood peg to the wood head. Is this common among violins or should I expect an actual gear or two? The violin is going back in any case due to a scratch in the finish... But this machine head thing bugs me. Won't wood on wood kind of smooth out over time and stop working?