Thanks guys- an update
1.. checked keyway - true and square
2.. with cover off noted oil mess on one side of cylinder head - bolts loose -one by 1/4 turn others about 1/8 - tighten all but some hard to get at cause some cowboy had welded the muffler bracket to one of the cover bolts
3..liquid fuel spraying out off air intake for carby on cranking -beginning to think valves but will check for wasp nests - lot of activity in that area lately
