Door latch won't fully release

They are probably junk! The plastic casing shot :-(
I need to know does anyone have an idea if the front and back are the same? I look for the back and ONLY the front shows up for sale
Thanks

 

They are probably junk! The plastic casing shot :-(
I need to know does anyone have an idea if the front and back are the same? I look for the back and ONLY the front shows up for sale
Thanks

 

Bump in old thread been searching for some rear latches as well they are very over priced compared to the front ones

 

Yep, I've been running without the plastic cases for a few yrs now. WD-40 doesn't do anything. I wince everytime sum1 shuts my door cause it makes an audible thud if latch is down when they attempt to close it. I have found that Graphite lube seems to keep it operating normally longer than any type of grease. I would like to fix it but I'm not paying $200, I could get lifetime supply of Graphite lube for that kinda money.