Can anyone advise me on correct or Successful jet settings for a L28 currently at 3.05 litres. It is set up with 3 mikuni 44s, a shorty intake manifold, Nissan Motorsports Header. Compression is about 9.5 with Rebello's 2nd hottest cam. Head has a medium level of porting. Electric fuel pump. I cant think of anything else that you might need to know. Problem is higher rpm performance, as it just levels out instead of coming on as I think it should. Engine is 200 miles old.