Hawk Head Gasket swap with TT250 - Question

[Skyd]

Ok, who here has done this already?

My first and main question is.....what to do with the o-ring that sits under the head. With the hawk gasket it sits inside the head gasket between the cylinder and the head. The TT250 gasket does not have a large enough hole to allow that.

So, I'm thinking with the o-ring in there it's going to hold the head off the cylinder causing a leak, among other issues.

So, what did others do here and how did it work out?

Also - the TT250 gasket is .5mm which is half the thickness of the hawk gasket and of course is metal vs. fiber. Is head warp tolerance an issue here? This thing is brand new, never been started by me. But it did come to mind, if they're quality is sloppy and they can get away with it with the fiber gasket.

Wish I had thought of these things before tearing it apart, LOL. It's an easy job so no worries. But, SOS. I'd like to get it all back together tomorrow so any suggestions are welcome.