Ordered new brass from Bill at Rocky Point. What a difference!! For reference I have a 76 r90/6 with stock ignition and timing; nothing exceptional about the bike at all. Vm32 carbs 30 idle I80 main 6dh3 needles 158-O8 needle jet Air screw 1 1/4 turn out With this set up the top end is incredible. I just want to go fast. Off idle is still just a bit rough, but only barely. All I want to do is ride this around now.