YO between Knit & Purl Stitches

[Mirl56]

How do you do a yarn over when it falls between a knit and a purl stitch? If I just go over the top of the needle it seems like I have too little yarn there when I get to the next row and knit that 'stitch' and have a teeny tiny hole. If I go under between the needles, around over the top and back to the front to do the purl stitch, when I get to the next row and knit that 'stitch' I have waaaay too much yarn and a huge hole.

Thanks-
Marilyn

[Jan in CA]

Here is a link to the KH video that shows very clearly how do a YO. If you still have questions after