Sounds like it may be a different issue, but I had a problem with my door not closing properly (had to slam it pretty hard) and the lock being very difficult to turn. My "fix" was a simple as a bit of WD40 on the latch and in the key holes. Door now closes with just the slightest push. Ended up doing the same thing to my slam latches and outdoor shower latch and all have been much easier to use since.
Rob & Kelly, Bella & Brady (Miniature Schnauzers)
2016 Eagle 323LKTS
2016 Ram 2500 6.7L CTD
2015 White Hawk 29REKS Summit Edition (Traded)