Yeah that is odd timing the transfers would usually be around the 114 to 117 and inlet around 200 , 170 is pretty good for exhaust ...

the 112 deg on the transfer is something you would expect on a smaller engine generally .

Head button geometric de compression is a nice one to play with. there are so many combos to work with , radiating domes with flat pistons or vise versa... flat on flat , dome and dome .. The flash face is something that intrigues me , there is a lot to gain in there.