Is anyone running a clamp on gas block under a Troy alpha rail and doesn't have any clearance issues? I purchased one from damage industries and it was a nice block but the underside was a bit too tall to clear the rail. There don't seem to be too many clamp on blocks and I've been unable to really find posts that say which models will clear one of these rails and which are no good. I'm looking for a clamp on block that doesn't require any modification to the block or rail to work correctly.