I gave up on the Bohning nocks are some other new nocks tend to split as well. I have been trying to find old nocks. I have enough to last a lifetime now I think.
As said above - agree that CA will breakdown plastic. I always use DUCO on wood and Bohning Fletch Tite on aluminums or carbon (both nocks
and fletch) Bohning still has good glue but I think their plastic is not as good as it used to
be. I really like old Merc, old Nirk and especially old Bjorn (I think they are out of business)