How did the bike run? I haven't did plugs on my Guzzi and probably won't for a long time. I quit changing the gap on my Ducati GT 1000 NGK plugs years ago. They were always the same. I checked them but never changed the gap. I decided consistency was better. The bike takes 4 plugs and there was never a variance. You can't do that by hand. If you measure with a feeler gauge it becomes a choice. With a wire, it becomes another choice. Whatever floats your boat. It's all good.