I have been completely restoring my bw80 and when I pulled the head I noticed there is no head gasket! I have not pulled the cylinder yet but I see that it does have the base gasket. I know there is supposed to be a head gasket on there but it has been running since I bought it without one. Is there anything wrong with not running a head gasket? I am about to order one, But just curious, does it effect performance? I am new to 2strokes and have been taking it apart cleaning/inspecting and reassembling to learn more about them.