cdi is great when new but a 30yo cdi box is gunna have dried out caps in it just waiting to short out between the plates,a quick search on ebay gets a new cdi box for 249 plus post from germany and youll need the matching stator/rotor and H/T coil where 31 aussie gets you new points/condensor and a trouble free system. if you wanted to give it a supper birthday replace the H/T coil as well and get your rotor soda blasted if its not badly pitted or replace it with a good used rust free rotor