Dave.. i have been a convert for 2 years now for the Brisk Silver electrode spark plug, had one in the nexus and put one straight away in the j300, i would recomend them and quite a few muppets using them now... they have up to 30,000 mile life and dont need adjusting ever.. the question will be does your NGK spark plugs you have fitted at the moment have the screw caps on them

if they do you can get the Brisk equivalent for your scoot in the UK.. if they have screwless caps you can get them in 10 days from USA... you will need the Brisk AOR12LGS which is the cross reference for the following ngk plugs NGKCR8E or CR8EB CR8EVX R017-8 C8E CR8EIX Iridium CR8EK CR8EK, C8E, CPR8E, CPR8EB-9, CR8E, CR8EB, CR8EH-9, CR8EVX, CR8EIX, CR8EHIX-9, CR8EIB-10
if you can say whether screw or screw less plug

I cant seem to remember.. I don't know where I'm going, but I'm on my way.