Thanks for the reply Tony. I've managed to locate the line breaks, and by using template overrides, made some layout changes; removing the br elements at the bottom of the day/week view. (The gap was too big)

Was just thinking would've been easier to add padding/margin (more easily changeable in .css) instead of adding 3 line breaks in a .php file to create a gap at the bottom of a table. But, I understand what you saying. Thanks!