Yes gapped with feeler gauges. Plugs look a nice healthy colour as well, it did hunt a bit when I got it, but it was running really rich at the time and I discovered the lambda wires had been snipped! Upon re connecting it ritchness problem dissapeared. Will try the smoke test but fairly certain there Is no leaks. Do you think the leads could be breaking down under load? Or a phase sensor fault causing missing and hesitation on boost?