Z1OwnersClub GB

hi all, im sure this has been explained somewhere else but im fed up with looking through previous posts (sorry) my zed 1b has newtronics electronic ignition fitted, but is still running standard coils, with nippon denso plugs, thing is it doesnt burn cleanly enough and keeps fouling the plugs. should i replace the coils with dyna-s type jobbies and if so what resistance ones should i get? also what ht leads are recommened?
cheers.
grumpus

You'd best check with Newtronics to be sure.... but generally, 2.2 or 3.0 ohm Dyna coils are favourite matched with Dyna leads or Taylor