Mrs Gilroy, you will thank yourself many to Es over once you get them installed on your unit.
I have noticed the newer units now come with two locks, one traditional storage lock and an additional thumb turn. I wasn't willing to drill another hole in my trailer door so I opted to replace the lock with the ones described in this thread. Newer A-Frame model owners may not find it necessary to change locks.
2012 FR Flagstaff T12SDTH
1996 Shadowcruiser Pop Up Truck Camper
1967 Newell Motorcoach
2003 Ford F150 5.4 V8 Triton Super Cab
2004 Nissan Titan LE 5.6 V8 4x4 Crew Cab