August 2023 - NGK fitted in 2017, about 8k since, the last time I would have messed with the carbs would have been after going lead free at that time. Again the front pair (on the right) very slightly weaker but less than before, I'll put half a flat on the front carb this time:

June 2026 - due for replacement by mileage but visibly still perfect. Colours closer now although for some reason No.1 and No.3 seem a little lighter than the others:

October 2026 - A few dozen miles since replacement. Noticeably paler, probably a factor of the replaced air filters! Running particularly well in the cooler weather this autumn but probably could do enriching a tad: