Does anyone know what size of bolts are used for the engine mount of the SIG Somthin" Extra. It appear that I have lost them in the middle of a flight, don't know how it happened without me realizing till I landed, but anyways, it appears that they might be metric as I can not find a bolt that will fit the blind nuts. Oh and I lost my manual so I can not chek for myself. Any help is greatly appreciated as I can not fly before I get these bolts[&o]