So I recently decided to mount a rack to my bike. My bike shop recommended one for the size of my bike and went home and decided to install myself. Unfortunately I wasn't paying enough attention and never realized the screws were the wrong size and I kept trying to tighten it that the thread popped out and slid down inside the bike frame.
I just got my bike out of the shop last week and hope that if this can be repaired it won't be too costly.
by Screwhead31