thanks,im just back from my local freindly lucas house,i've found the NGK equivelent to a hotter champion,car is much more responsive when warmed up........but,with all my trails and tribs with the carb mount,i've now found my new soft mounts have fractured :roll: ...................thats whats given me the missfire at 5k+ rpm i bet.
all should be ok with another set and my latest version of front mount though..............................
but driven normaly the hotter plugs feel better :cool: