I'm trying to gather parts to do a disc brake swap on the rear of my Jeep. I just bought the calipers, pads and rotors. I was going to get hoses and banjo bolts, but I'm having a problem figuring out what size banjo bolt I need. I tried both a 10mm and a 7/16". The 10mm is too small. The 7/16" starts in the hole, but it stops as soon as it starts to thread in. Does it take the 7/16", but it is tight because of them being rebuilt or what? When I looked up the calipers I speced a '78 Chevy K20. What size banjo bolt should I need?