over tite valves on 50w oil, hydraulic lifters??????? flat cam lobes/lifters because 50 w oil won't flow thru bearings and sling off to oil cam--------won't flow to top of engine to oil on drain down?
1 & 3 ports--------pvc ??

needs to lock out timing advance completely and run it to see what it likes-then build curve to suit that

If spark plug wires are closenough to header to burn, they are close enough to crossfire