I was looking at it again at the weekend and I can't see how the water would go throught the grill now I think about it because the rad is in the way! What I think caused it is because I had to wash the engine down after that oil explosion I had. The cap is still a bit damp probably.
I'll take it off and leave it in the airing cupboard for a few days
I think I'm gonna get some Splitfire leads as a lot of people seem to fit em. Demon Tweeks can do me a set for about £40. Good price? Only thing I don't like about them is there blue which goes against my colour scheme. i want White leads but don't know anybody who does em!