Not a matter of height....
There's a gusset and weld in each corner that support the tubes for the bolts. They hit on the outer rocker stands.
I could try and see what it would take to get them to clear, but it may be where I would get into something and it would take more and more and more....
I have a set of regular Windsor valve covers here that fit just fine.
Maybe time to upgrade to a nice set of valve covers with my logo on it?