The support up the side is how it gets into position to support the top surface of the through holes. It's usually a pain to remove. For functional parts I generally prefer to print without support and rely on bridging. There's usually some clean-up needed, but it's often easier than trying to remove the support. And it's much quicker to print without support.
Enforce isn't a limiter, it adds more support for the first n layers when support wouldn't normally be needed.
Edited 1 time(s). Last edit at 04/11/2016 10:06PM by JamesK.