best way to check firing setup is to take off rocker cover so you can see the cams and then with the spark plugs out turn motor over in a clockwise direction and follow the sequence - inlet cam opens and piston drops - inlet valve closses and the piston comes up to top dead centre - check that both cams are on the minimum diameter and then creep up to top dead centre as shown on the crank balancer - this is top dead firing position for number one piston put the dizzy in and double check firing order of plug leads - should fire straight up!!
Matt
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