Hey guys just joined the other night and love the site. My question is this, on the ez engine plans I see where on the frame it says to drill five hole all .125 then on the next page I see the maker of this engine tapping one of the holes! In the plans it says all hole tapped for 4-40. Well .125 would be to big for that. From what I make of it, is that you should drill and tap 4 of those holes for 4-40 and the middle hole should be .125 for the air? Am I thinking right? Im at the point where I need to drill the hole but dont want to muff it up. I have a lot of time just squaring up the base and frame on the milling machine. Id hate to scrap it now.