Had the problem with de door trigger right as well , took it appart , was a worn thru little stud , took the handle out , took the worn stud out , used a slightly bigger drill-bit to get everything drilled out and straight again , then used the same drill , the end part wich was in the drill , and made it to length needed , hit one end with a hamer , (it is just tiny stud ) , so it was slightly out of round (just at one end so it will stay in place ) , an tapped it in to place , lubricated is with grapphite and works fine ever since .
It is actuallu a hollow tiny stud wicht holds the trigger in place , and since the lubricant if there was any , it just wears thru in time .
So it can be fixed , by yourself or a handyman