In your original post you specified the order of switch positions to be...neck, series, parallel, bridge. Just be aware that the Oak Grigsby 4 way will give you bridge, parallel, neck, series, but it will certainly give you the combinations you want. I've got that very combination in several guitars and it works great. But, as was said, in position 4 (series) especially if you have your P-Rails in series, the tone is going to be extremely dark and generally unusable. Just a single P-Rail in series is almost too dark to be useful.