@ ademon - I realised I had a problem when I went to .107th primaries and it showed lean at 16 AF on the AF guage at 2100 rpm in top gear.

Please note: Last weekend I ran 12.6 with the LD340 - AF guage read 12.5 at idle, 14-15 at cruise, 12.4 at WOT in 3rd.

When you see that the WB AF guage shows pretty accurate readings - I start to worry when I have 16s AF and I'm running .107 primaries with the tree on 5 turns (1996 rods too) !!!

The car drives like a pig as well -fluttering off idle and other issues.

To run it that rich and still show a lean - ish mixture - there's something not right.