I didn't know about spreaders. Are they supposed to be loose - or has mine come away? It looks like a tube - which suggests that it should be attached to a pipe. Is that the case?
I have the problem of the water not reaching the front of the toilet - leaving behind anything that was on that part. I've cleaned the rim and there wasn't much calcium carbonate there in the first place.
However, feeling all the way around the rim, I found a white dense plastic object where...