i have a weak spark on my mk2 crm could it just be the pick up points or the magneto itself?

bugger am now going to have to take the engine out barrel off and get the hole welded up and start again. but if its sorts it all good.

my exhaust is blowing from the front off the barrel. it was not fitted quite right so took it off to adjust it also fitted new gasket, unfortuantely one of the studs was not sitting correctly, turns out the thread is stripped in the barrel so i fitted a heli coil but now dosent seem as if it wants t...