Took me 4 hours to find a bad ground in a Lakewood attic because of one loose staple
Had a customer with internet dropping every 10 minutes and I swapped the modem, ran a new drop, and checked the tap twice with no luck. Turned out a staple 6 inches from the outlet had nicked the shield just enough to let water in, and a 10 minute fix ate my whole afternoon. Any of you carry a TDR meter on service calls or just go straight to replacing the run?