Thanks fellas.....yeah it starts good as gold goes straight to about 1500rpm and will drop eventually to about 1000rpm, but I have not timed it to see how long it will stay at the higher revs....like all petrol I have never thought they really need to be warmed up....so can just disconnecting the choke be a option and a simple one at that ???.........my stock 351c starts with a bit of a pump on the peddle with no choke whatsoever and I'm away laughing, never warmed it up and she runs like a charm I don't flog it when cold but it fires and runs sweet food for thought why have a choke ? do i need the one on the TB42E ??..... .cheers