Thanks for your reply
![Smile :)](./images/smilies/icon_smile.gif)
,
I checked yesterday and there is 3 shims as you mentioned; 2 copper and and 1 silver for a total of 0.6mm.
There is really a lot of pinch on this engine and I think I'll complete the break-in with 20% and switch afterward to 30%. Good to know that I don't need to add a shim.
For the plug I'm surprised that we could run a super hot with 30%. But if it run's well I will order some. And it get's pretty humid here. I was to order the O'Donnell #77T but will follow your suggestions.
Looks like I won't get my starter box for this week-end
![Sad :(](./images/smilies/icon_sad.gif)
. I have ordered the Thunder Tiger/Associated one.