I was wondering if it is important to use the type of o rings that come on slant originally (square type) or can I just use regular round o rings. Cant stop them from leaking with originals. Anyone have any info on where to pick some up. Thanks for any help. P.S. Dual offy intake worked out well so far. Maybe you can see something that would work better then what I have here. I'm pretty much winging it so far.