Ducati 748 - at high revs, once shes hot, say around 180 only sometimes i get some coolant spraying somewhere under the ignition and coming down the frame onto the battery and out the air vent on the right side only. I removed the hose that leads from the coolant tank to the rad, and tightened the fasterners after inspecting the hose... changed the coolant.....and on my next ride it still happened again. ... i cannot find/see the source of the spray, its somewhere in under the ignition. I have read manuals and am wondering if anyone else has had this issue, before i take the whole tank off ect

The expansion tank (right under the ignition/front of tank) is known to leak. That's probably your cause.