I feel I must put in this disclaimer. My work had been completed. I completed the job and it was working well but I thought there was a leak at the joint of the expansion tank. I simply ran my thumb around the connection to feel for water. That’s all it took and it led to a two week pain in the ass. I tried my best to get that bastard out to no avail. Had I thought to buy a machine to take X-rays I could have removed it with a couple minutes