changing brake fluid with a buddy on time, comes time to bleed the brakes. I have him fill the reservoir and he goes through the front wheels, I tell him to open the bleeder valve and I will slowly press on the brakes till I tell him to tighten it back. He follows my directions but the brake pedal is still super squishy, I think to myself, oh this thing must have to be running the pump the brake fluid (i just flew home from a 13hr flight), start the motor, smash on the brake pedal, totally forgot to put the cap on the reservoir and we now have brake fluid everywhere. Time to re-bleed everything, come to find out, his brake line running to the rear distribution block had cracked and was pouring out all the fluid we were putting in anyhow. EPIC FAIL