Kioti DK Cab Door Handle not staying closed.

[GarlicOfEden]

I noticed that lately my left door handle popping open during operation. I've adjusted the catch and the problem continues. Even if it fully closes to where I can give some push out and it won't move, if I open the right side door, when I close the right side door, the left side door (fully in closed position) pops open! Ugh! I have the shop manual for the tractor and it only gives a part number and where it's located on the tractor.

Does anyone have a suggestion as to how to fix or what the problem may be. There has been no damage or mishaps.

Signed,
Baffled