Have lost all power in 5th gear tonight, still engages smoothly but no pull from the engine. 2nd gear clunks when engaging but pulls like normal on roll off 2nd 'kangeroos' like repeatedly stalling. I've also noticed some oil on parts of my chain and huge vibration through the pegs on acceleration and odd burning smell.....all in all i think its f@#¥ed any ideas\help greatly appreciated but think its the end of the bike :'(