I think my powermaster went out on my 87 gn and converting to vacuum brakes this weekend. The brake light comes on now 80% of the time and then there are no brakes when the brake light is on. It seems like it started happening after I installed my line lock kit and broke the lines loose. I've already tried bleeding them again to get the air out. I have a used vacuum kit from a board member and was just wondering if there is anything to consider when removing or installing components. thanks in advance.