In an otherwise elegant, even striking skin, Pix Office has a problem with the size of the pull-down menu buttons. Most of them look squashed like this:

While the rest look elegant like this:

I'm having some difficulty finding where in the skin the settings are found to change the size of these buttons so they don't look squashed flat. I was thinking that it had something to do with the height of the pull-down menu bar, but the only setting I could find had no effect on the the height of the menu bar or the buttons.
I also found where it looks like you can change the size of the button image, but no changes I have made to them have made any difference. The Skinstudio interface is, to put in gently, arcane. Is there someone out there who can give me a hint how this is done? Thanks!