Checked the Jabiru manual and realised my temporary fir of prop bolts were the wrong way around ie hex head pushed in from the front leaving the nylocs on the rear !
The challenge was then to work out how I could possibly get the long prop bolt through from behind …. after a few minutes checking I realised that thy must have designed it such that there is one place ONLY that this is feasible … just above the oil filter …
Very slowly turning the prop to reveal each successive hole (the engine still only has delivery oil in it so need to be careful until we get some proper oil in)… on the 3rd bolt there was a huge pop as an upgoing piston pushed air out and one of the exhaust stack bungs travelled the full length of the barn !
Jersey Sherwood Ranger 
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