Thanks to you both. From your replies I infer that this is a stacks limitation, not a STH one. It isn’t significant to me, but I was tearing out what little hair I have left, because I couldn’t work out why some FA icons worked and some didn’t.
I’ll have a look at SVG. I am coming back to RW after a few years of neglect, and I have a lot of catching up to do (My column stacks say Stacks 2 on them!!).
@fergus You’re like me - no hair on head - its a great rain detector! I used the Blueprint stacks in this website and icons are FA5.
I can also add that whilst I do not have Project 20 @Webdeersign projects are great starting points and are well built, today i am just using something from Project 13 and I have a couple of others too.
Either way you should be able to achieve your objective without losing too much more hair!
Welcome back and get Stacks 4 if you can - its awesome!
Paul