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Plugs...yes they looked lean overall, hence the switch from 152's to 155's. I need to take another look at the plugs & reassess.
Regarding the white plugs, that's why I asked how you drive the bike. If you cruise around all day in the first 1/3 throttle position, and your plugs are white, your pilot circuit and/or idle circuit is too lean. The mains aren't really in the picture at this setting. Running at full throttle then checking plugs will help determine if the mains are right.
Another check for the right main size is to get up to highway speeds then holding WOT for a few seconds, then back off slightly. If the speed increases, then you are too lean. The opposite is true.
12 Rocket Roadster
03 Bonneville America
69 BSA Firebird Scrambler
73 Yamaha TX 750
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