The connection is between a metal line and a quick disconnect(IPT?) on a BX2200. I'm sure that it was previously over tightened. I used teflon tape on Friday and will watch for leaks. I had worked on same fitting before and it did not leak for a couple of weeks. When it started leaking again it was still tight. This all started when my neighbor left to visit her grandkids for a month and left the lawn mowing and tractor in the hands of unknowing family members. I have already spent about 8 hours repairing damage that they caused.