Today I changed the oil on my zzr 250. Since then I have found neutral much more difficult to find than before. It also seems to clunk more when going from neutral to first, but changing through the rest of the gears is smooth. I also noticed that the clutch slipped under hard acceleration in first and second gear. These are all issues arising since the change. Pretty sure this is the same oil I used last time too. Does anybody have any thoughts as to what could be causing this?