I think the oil is getting too hot - high revs it smokes a little - I had a look a couple of days ago after a drive - gave it a little tickle using the throttle cable - and smoke was coming out from the top of the breather on the oil catch tank.

Would this suggest it's getting too hot? I don't want to to sound an obvious question, but would a modine/oil cooler sort this?

Ideas?

Thanks.