Well, I DID it myself! I installed new shower heads! The tough part was getting one of the old ones off! Once I used some CLR and a toothbrush, it was easy-schmeezy! My plumbing activity began yesterday, when out of the blue, my daughter’s hot water tap began pouring water! While I didn’t manage to get the correct part for that, I DID turn off the hot water there and will proceed with seeking out that solution later today.
The point is that while in the plumbing department of my favourite mega-store, I DID manage to get this project in hand….what a thing to do on an extremely wintry day!