So I acquired a 223 about three weeks ago as some of you know and I failed to have a leak down test done prior to purchase and yesterday it bit me. It has the Mercury Pro XB and I was wondering who you would recommend between your house and San Antonio of a guy that will do an honest and proper repair but not necessarily the cheapest as I want it done right? It didn't grenade on me, so I hope that saved the heads and block! Let me know if you can recommend someone if you have had the same misfortune as me? Thx crew!