Came-yo Mondial and string combo?

Hello everyone, long time yoyologist. dropped the hobby for a few years just picked it back up with a new plastic grind machine. loving the unresponsiveness.
My question is I have an old Came-Yo Mondial non-duncan. and was wondering what is the most unresponsive sting available now? I currently have on hand old type 6 cotton string. and some Highlights, and a few alchemy string i got at the store.
I know it will not perform like a new school yo yo but I just don’t like the yo yo snapping back into my hand.

i doubt you’ll get it unresponsive. but for less grab get some thin string (angel hair?) or make some thin string. id guess nylon or poly.

Ok cool thanks, I was looking at trying out that angle hair. people say it is similar to alchemy, I really love this alchemy stuff. less fray for me the better.