I know your pain... I have the same problem I have yet to get a gauge with any pattern I try
Maybe you could just do some math to see how many stitches you need to get the same measurments as the pattern??
but then again...dont take advice from me, I did that and knit a sock yeasterday that I thought would be perfect... but turns out it was WAY to small
So Yeah..... I guess I'm No Help