Looked up clearance on a briggs sight, .003 to.005. Some recommend going a 1/4 inch past TDC. I've always used TDC, except for today. Going to set it at .005 TDC and see what happens. However on older models it shows .004 - .006. I've always found the clearance increases, then the decompression valve doesn't work. Come to think of it, because the cam in new, there may be more decompression than needed, so I may have to go past .006. Starter spins the motor over like there is no spark plug, very little compression. With the bad cam, motor would lock up it had too much compression.
I'll play around with until I get it to work.
Have a happy new year.