Back from a great time at Oshkosh. For those using the EXP version of the 390, I've learned some interesting information. As I mentioned before, I was installing the control bracket for the fuel injector and while I was torquing the right rear intake manifold bolt it sheared with the end of the bolt stuck in the engine block. I did have many restless nights, but after doing a lot of research and buying some good EZ outs, today we removed the intake manifold and pipes, filed the stuck portion of the bolt flat, center punched it, drilled it and hammered in the EZ out. One twist of the EZ out and the remnants of the bolt was easily removed by hand. I purchased new gaskets, o-rings, etc and reassembled the parts. Not happy with the left side pipe to manifold o ring seals, I'm going to redo it. I also decide to remove the fuel flow transducer to another, yet to be determined location. I'm just not happy with the way the plans call for it to be installed. More to follow another time. So, while at Oshkosh I learned that mine wasn't the only bolt that had sheared. Coincidence, I don't know, but just be cautious when installing those bolts. Lycoming Tech Support was very helpful while I 'suffered' thru this problem.