Gasket Got a bit of a problem with an oil leakage. Just bought a KTM Duke 2 2002 model

Awesome bike that i bought yesterday after needing to slow down from my GSXR days. Well happy with it apart from oil p1ssing out of what i realised is the cylinder head base gasket. Got it home yesterday and after drying out from another glorious day's riding in the p1ssing rain and noticed my boot was covered in oil (on right boot - rear brake side just behind exhaust route). The question i need answering is will a quick fix of unbolting the cylinder head and putting some decent gasket sealent in the gap made by the missing piece of gasket fix it or is this area under massive pressures? I'm guessing its not subject to too much pressure cos the piston rings dont go down that far I assume? The oil is just spitting out a fine spray Just need to know whether i can get away with this as a temp fix rather than having to do a full top end strip down which i don't really want to be doing at this stage.replace the gasket before it gets worse and gets on to ur rear tyre,,