Ah - Excel 2007 .... still using the ol' Excel 2000 (had issues with Office 2003 on my ol' dog laptop).
Anyway, I updated the file a little (hopefully easier to edit for everyone). I'll also post it as a PDF incase someone wants to look at it and doesn't have Excel.
Anyone know what the E37 uses? Guessing 58X and 4X for the crank and cam.