OK, i'm back and with the same problem, the instant gasket didn't work neither did the grease nor anything else. for anyone attempting an oil change you MUST READ THIS! i am now going to tell you why non of the above worked! i didn't keep track of which bolts go where and consequently put them back in the wrong holes! what this did was indeed damage the crankcase, ruined the threads and the bolts and also broke off a bit of the case which is now inside my engine, now, when this 'bit' gets into something important which i am told it will do eventually i hope it;s not something that stops the oil from going through as it will then write off a £2500 pride and joy motorcycle due to my own f*ckin stupidity trying to save a few quid! please learn from my mistakes, don't reply calling me a tw*t because believe me, i already know and am quite literally kicking my own head in! i am going to give myself such a beating that i might actually get done for assault!