Cdi issue on 88 foutrac

Ok so first post. I’m new to atv. I’m a hunter and tired of beating the truck up and saw a guy in the neighborhood seeking his 1988 fourtac 300 4×4. He is the original owner. Good price. Clean rig.
So he said only issue is that sometimes you have to tap on the cdi for it to start. Well that seems true. I tap on it and it fires right runs smooth no sputter or engine issues. Will start over and over until cold then tap tap to fire it up

Went to local hinda shop they said I’m nuts it can’t be cdi and said the u to is to old for the, to even work on.

I read some post that said other we’re having same issue

So. Seems like a no brainier. Should I buy it and see?
If so any manufacturer I should look for or stay away from

Anyone had this issue before

Lastly. I need a brake light and license plate to be legal in AZ. Any kits people recommend

Thanks folks

Chad