act pins cracking case

sooo my act link arm pin is cracking into the rear bolt guide. im guessing that it is downward pressure from the link arm on the pin that is blowing out the holes. im thinking it may be because of my rufas dawg wicked bolt......

do i even need these pins? from what i understand they are for a act link arm. can i get rid of the bottom one?

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called tippman today they offered to replace the shell halfs. i told them it runs soo nice id rather not and can i run no bottom pin, they said yes no bottom pin but keep the top in. i figure the link arm may come up and out of place if not_popupControl();