I was talking to a friend last night ( who has worked on a few 20v conversions) and he said "just get a can that vents to air ( filtered or unfiltered) blank the hole in the TIP where the breather hose normaly goes and fit a pipe from the "top hat" plastic breather on the rocker cover to the inlet on the catch can?? is this ok? or a bad way to do it? He also mentioned fitting the catch can to the side of the batery box/ tray???