Not up to "guru" status yet except for maybe a few in my small circle, but I'll comment nonetheless. I would like to see the plug deeper into the chamber myself, but I definitely don't like seeing sharp thin threads waiting to break off. I would be looking for longer reach plugs or look into getting the plug seat cut deeper (probably both!), and maybe some chamber cuts around the valves... Thank again you for sharing, these are the types of posts that make this thread!