Has anyone drilled out a Gamut guide p40 boomarang (sp?) for use with ISCG? I know they make an ISCG guide but its not going to be availible from my distributor for about a month and I have a race in two weeks that I need a guide for. The only difference between the BB guide the ISCG guide seems to be the drilling so I would think that it wouldn't be any issue, anyone have more info?