Try something like -50 in the "Limit maximum altitude".
I found it fastest to see what was happening by using only one of the restricting surface layers connected to the cloud at a time. Then while using the RTP with atmosphere display active I could just slide the surface layer's altitude value up and down until various effects started to show up.Got this type of thing eventually.
Thank you. I think I figured it out as I might as overlooked something in there, that or something else was happening. A bit of a meticulous thing.