Stihl 018 questions

[Wonkydonkey]

Well good morning guys.

as I’ve managed to get my hands on a few junk 018's I put one together from all the parts, and Was reading about putting a wt215 on it.
Then that got me thinking.
So I’ve got some timing numbers before I pulled one of the cylinders apart
Ex 109
Tran 130
Int 66/7

do these look correct?

 

[Wonkydonkey]

Me thinks there abit of room to widen the int from the markings in the piston


edit, I just realised just in time about the ring ends. Lucky I started on the upper ring side (just a bit more room to play with)