So I received a grizzly 870. Stripped it down to clean and lube. Cartridge stop and interuptor fell out when trigger housing was removed. Now I can't seem to get them to stay in place when trying to insert the trigger housing again. Tried for 1 hour, getting set to pitch the whole works in the woods. Need some help with assembly. any tips? I do not remember my remmington 870 having this problem.
HELP PLEASE.
HELP PLEASE.




















































