Are the banjo bolt washers part of the conversion "kit" that you received???
Could be they were not the proper size, or just poor quality offshore items.
Maybe worth taking a banjo bolt to the local FLAPS (with knowledge of what caliper you are using) and get them to help select a proper fitting washer???
Definitely one place you do not want a leak at - yikes!
Sorry to hear about having the BUG (ugh). Hope you can get recovered soon!
