product page image block spacing

Site URL: https://guitar-clarinet-pdg2.squarespace.com/

Hi, 

Can anyone advise how do I fix the problem of spacing on products page? Is it possible that there is no way whatsoever to get rid of empty space when adding additional sections sections  ? Also how do I control the padding of each element?  

I am still in the process of choosing the template, is there ANY template at all that leaves you in control of individual items padding on page? 

Thanks,

Filippo