boconegra

o recently bought a 11/12 plate BOC with the CAVE engine, 60k Has a miss fire at higher revs occasionally, I’ve changed the plugs the NGK ones gapped at 0.6. The old plugs (pictured) from 1-4 L-R any ideas on them? I done a comp test and they were all around 150-154 psi. Not sure what to do...