thanks
well seller says the carb is brand new (and it looks clean enough to eat off of)
and said he put in a new distributer and plugs !
maybee he said wires too
i will check into advancement and other possibilitys mentioned
im shure the engine is tired
could only get up to 60km with crappy batt
then got over 70 km with a spare batt
but didnt wan to push it as it sounded like a lifter? hitting the vallve cover?
the sound was worse with the crappy batt it seemed to me
thanks a ton