Can you disassemble the door lock by removing the screws on the inside portion of the door latch? Typically the latch is sandwiched together and held by 4 screws, one at each corner. By removing those screws, the latch should come apart and be removable from the door.
Days camping (2015)----88 days
Days camping (2016) ---110 days
2016 Wildcat MAXX 28RKX (33' TT), 2007 13' Scamp
2015 Ram Laramie Hemi
30 years RV'ing
12 different RV's