flush

I installed the throttle spacers and it seems they don't sit entirely flush. Is that true for everyone? The spacer is a tad bit taller. Doesn't seem to effect anything but I'm curious who else experienced that? Also, did you all keep the clear plastic circle thing?

Have any of you flushed you 1199's cooling system yet? I need to dump the antifreeze and refill with H2O and Water Wetter. Any tips? I will have to do this very soon for an upcoming trackday and I haven't even had the fairings off yet.