I started the build 2 months after getting the frame. Not sure if that was long enough but don't want to get into a blame game. I'm really happy with this bike, I like the builder a lot, wish I hadn't used tape on it but doo-doo happens. It's all been a learning process as my first bike build. I will never use tape on a new, custom bike again.
that's what I'm saying then, it's not your fault! if you didn't paint the frame then that is 100% paint prep error. the mark even looks like the size of a finger print. cured paint does just come off a bike like that. quite the contrary it's a pain in the ass. why do you think we invented a sandblaster if tape worked so well removing properly applied paint?