I believe you have the cam and 1/2 cams on your bow. You can take it down in 1/2 inch increments until a certain point. I had a Hoyt with that option.

You also shouldn't be touching your string to your chest like that. I would say thats a big "no-no." I anchor my thumb on the back of my neck and the string on the tip of my nose while looking thru my peep.

Good luck and get that DL shortened.