ForgedTrue	..............	R3	..............	R4
Top	...............	Flat	..............	Domed
Compression Distance	...............	1.601	..............	1.607 /less dome
Deck minimum thickness	...............	0.285	..............	0.170
Weight w/Pins&Rings	...............	674 gr.	..............	683 gr.
Note	...............	not relieved at pin	..............	milled at pin shorter skirt