N00b having trouble

Hey guys. Help would be much appreciated.

I'm trying to get a progressively filling ring, similar to loaders and spinners you see on the internet.

The composition only works right when I load it the first time on a fresh application load. Can anyone help me figure out where I'm going wrong? I've spent considerable time trying to figure it out with no luck.

I suspect I'm using clear incorrectly somewhere? Other than that, I have no inklings.

Thanks!