removing the convertable top on the 69 and going to clean the frame up, the top is excellent and would like to re- install to save a few bucks. I could use the lend of the Al Knock install video if possible. The other question is there are 3 cables on this top frame i was given for parts and i thought there where just the 2 that ran the forward portion to the header , the 3rd one is on the drivers 'b' post where it bolts to the car. any thoughts