Insert the tip from the PEX in excess of the top from the fitting. Slide the tip with the PEX tubing which includes the crimp ring or cinch clamp on it more than the tip with the fitting that you screwed on to the copper tubing. Force it on so https://ear-treatment-injury77765.madmouseblog.com/12558370/new-step-by-step-map-for-1-2-copper-propress-90