Where can I find spare parts for the shower enclosure?
There are many websites on the internet where you can find different things to arrange your bathroom. I found not so long ago an exciting website where you can find many things that might help you renovate your house. I guess you can see there some cool hand-held showerheads for a pretty good price. The delivery is for free, and they have pretty cheap products. Check it out on their website for more information. I am sure you will find something interesting there.
It seems to me that most of the spare parts will depend on the model of your shower stall. The main thing after you have replaced and cleaned everything is to set the shower height correctly. For this you need information – standard shower head height. I hope it will be useful to you.