not much, I went to pick up the B52 1977 calipers from Parts Avatar this morning, they were supposed to be ready for pickup 2 hours after ordering so I should have picked it up Thursday afternoon, Friday the latest. It's an hour drive each way but their schedule for delivery doesn't work, they must be on horseback. The calipers are a Cardone rebuild and one of the calipers has an inset for the bleeder screw but the problem is the thread now is 5/16" x 24 instead of 3/8" x 24 and the used a bleeder for a rear wheel cylinder. I am just a little more than a bit pissed off...😡