I had one heck of a time getting that tube out with that wire stuck in there...had to gently pry on the base with a plastic screwdriver.....someone
really didn't want to pop that board and fix the darn socket! ...Who knows what other joys await......

at least this is encouraging....351 ohms, and yes, that is the bed of my pickup.....we'll be back in the shop in a day or two...