Kelly,
I also have a R180 project on hold while others have taken priority,
I went and dug out my manual, OH OH all in Chineese

I could check the current clearances, It has been well broken in but never touched the valve adjustments.
my 1115 is Intake .035 exhaust .045. I would venture a guess on the 180,,,.
any difference would be a factor of the total length of the push rods and valve stems

so maybe .025 and .035 ? just be sure at full temp there is still clearance.
Bob P