Update,

Managed to get 9 tanks through the motor now (neighbours must hate me)

done 1 tank on idle with a sock over the head
done the next 4 tanks with a sock over the head driving around garden

then removed sock added shell leaned the top out to get temps in the 200 range i done 3 tanks like this bottom end was sluggish

then i leaned the bottom end out to make it a little crisper on take off this done a nice job of that highest temp was 235 and that was when the tank was nearly empty

Its going to get raced this sunday so far really really impressed with this motor, no cuts during run in and it idles like a champ