Nope, never bothered. If the wiring is correct and I usually use a Lancaster to check it, and the phone is okay, I check the phone by plugging it in at the mainframe. If it is bad there, I replace the KSU if need be. But all these flexes are too old to mess with...especially with the price of an STS. That being said I still have customers that use them.

www.myrandomviews
"Old phone guys never die, they just get locked in some closet with an old phone system and forgotten about"

Retired, taking photographs and hoping to fly one of my many kites.