Thank you everyone for your kind replies
One more problem though! Is there a foolproof way to prevent the holes in the corner of the heel gusset. I have tried various ways but it does'nt end up looking very tidy. I have Ann Budd's book and she basically says to not worry about them and just to tidy them up after. The methods I have tried just seems to twist the stitches and they don't look right. Also, the pattern I have says to pick up 11 sts down the sides of the gusset but I do not have enough of the chains left by slipping the first stitch to do this. I have tried going into a chain twice, but you can't do this as it ends up being a yarnover instead. Heeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeelp!