Swap out the coil and cap from another bike for giggles.
Maybe float jet too. What's your mileage like?
Plugs fail due to bad spark or rich mixture. Oil is but a minor inconvenience. We all run 40:1 & cant think last time anyone actually fouled a plug. Usually just get a bit gurgly in top end and you realise that the plug is a year old..
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'07 EC300 GG
'14 TXT250 GG
'? 496 CPI Cheetah RZ/RGV hybrid
'22 765 Street Triple RS
'21 XTrainer
'69 Stinger T125 Suzuki
'23 TRS 250RR (it's a Trials thing)
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