I'm not familiar with the ultralight and I'm not familiar with the shim kit, so i'm probably not going to be any help
...............but, My Supernova came with a shim kit and it has a raised comb feature. I'm not familiar with this, but I "think" you can shim it to adjust your up and down and right to left? I've never messed with mine but I thought that is what the shim kit is for? If so, I'd think the ultralight would have this as as well or you get use a shim kit off a supernova??