I just had a new softener installed (not sure of the brand/model) in my home 1 month ago and everything seemed to be working fine until yesterday afternoon. Resin poured into the plumbing and quickly clogged up most of the fixtures in the house. I knew enough to bypass the softener and call the plumber who originally installed the softener. He was over in 15 minutes and helped clear all the faucets and lines. He took a look at the softener and said that he mistakenly reversed lines and that's why I was now, 30 days later, getting resin throughout the house. He's planning to return tomorrow to make the repair. Does this seem odd to occur a month later? Is there anything I should make sure to ask him?