Windowblinds XP theme buttons weirdly spaced out?

Hey there everyone. I apologize if this is a common issue. I have installed the Stardock Windowblinds program, however the XP themes I have tried have either resulted in elongated buttons, or buttons which are too far spaced (such as those depicted in the attached image). Can anybody recommend a theme/remedy which might mitigate this issue? I understand that the buttons in windows 10 are naturally longer, but It's the only thing left that's bugging me about my theme. Many thanks.