I learned a lesson, there are 2 lengths of banjo bolts available for our new 2-piston PBR 13" brake calipers. My braided brake lines have the thicker square end that bolts up to the caliper using the banjo bolt, well I had the short bolt which does not have enough threads (you will strip the caliper if you tighten it - aluminum caliper, steel bolt!)

To fix my issue I bought this: Earl’s 977517ERL Banjo Bolt For .425 in. Banjo Height Thread Size 10mm x 1.0 Single Hole Dia. 10mm w/Crush Washers

If you have the thinner style end on your braided line-to-caliper youll need the shorter banjo bolt: Earl's 997517ERL Banjo Bolt For 8mm Banjo Height Thread Size 10mm x 1.0 Single Hole Dia. 10mm w/Crush Washers