Finally got my gen 4 7 port(with a cut lsn) dialed in correctly, never flamed on me once all day came in at 7:30 with at least a third of a tank every stop.
6mm restrictor, od 97t plug, one brass one silver shim, werks medium conical with dynamite 053 pipe.
Almost had TQ and won the main not bad for only three times out in the last year