So my friends converted to SM wr400 has no overflow for the coolant. It normally has one right? Apparently the PO or someone took it off and it just overflows coolant to the ground, Right in front of the rear tire. are there any other options for a replacement overflow bottle? How does it pull the extra coolant back into the radiators? If he fills the coolant it should overflow once and get to a normal level and not keep overflowing the rest of the coolant should it? What would that level be? Whats the procedure for making sure the bike stays cool but without an overflow?