Hey All, '79 Special II, all stock engine. Earlier this year I de-restricted my exhaust a bit (punched 1/2" hole in the stock baffle) and have really enjoyed the improved "Oomph" in the motor...and the sound is perfect for me. However, the other day I was thinking that perhaps I ought to do a plug chop and make sure I'm not running too lean....as I haven't really done one since last summer and I was on the richer side of things at that time. Other notes: I get great performance throughout the power band (very snappy), no back-firing/popping--although I did enrich the idle mix screw 1/4 turn as it was a little lean at idle after the "baffle job", no hanging rpm's or really any issues with regard to throttle response...idles great, and starts up without any hiccups. BUT...it does feel a bit warmer than it use to...so I went out today, warmed up the bike (old plugs) then swapped out for new ones (BP7ES) and did two 1/2 mile passes at WOT plug chops. Here's the results, sorry if the pics aren't very clear (And no, I didn't cut them, but I think you can see down the porcelain): My thoughts: They look too lean, but perhaps a second or dozen pair of eyes could weigh in? Or maybe there's not enough mileage to tell and I should ride a bit longer? If too lean: Could I raise the needle a step or two, or would rejetting be the way only way to go? Thanks!