morning, just wondering if anyone else has had the same problem, I have a 600 k3, just had another engine dropped into my bike as well as a new thermostat and aftermarket rad. went out for the first time since everything has been done. after a 30 mile run in free flowing traffic the temp was around 70 degrees, ended up in a city with slow traffic, roundabouts and traffic lights. temp went up to 108 and coolant started leaking from the expansion bottle overfill tube, after pulling over I topped up the bottle to the max mark and just went home. everything seemed fine. until I left the bike on my drive till the fan kicked in and off at that point the expansion bottle was boiling and was leaking out of the tube, when the bike was all cooled down the expansion bottle was empty. I spoke to my local Suzuki dealer and they said the expansion bottle should be between the min and max lines when cold. would appreciate if anyone has any thoughts onto why this is happening..