so i have a 1999 zx6r that seems to only starts when its cold. once its warmed up, and turned off, it wont start again until its cooled down. when i start it up it runs fine. if i pull the clutch in at high speed it cuts off sometimes but that problem isnt as serious because it rarely happens

the most ive done is changed the oil and changed the battery. i know the spark plug is relativly new.

it should be noted that apart from that issue, the bike runs perfectly from cold, and right up until i turn it off, warm... so its not an obvious fault.

anyone have any ideas???
Please help!