Are you talking about the "T-Handle" locking device? If so, I can help you out, the company H.E. Mitchell, in Portland, Oregon. was able to get me a complete set for my 2005 Damon Daybreak. I don't remember the total cost, but it was less the a hundred dollars. I choice to replace them all and have them keyed all the same. A guy named David Abbajay was the rep that assisted me. This is the web site I got the part number from Products
it was a challenge to get them. I'm not sure if they are a whole sell place, because he ask me if I was a license locksmith or RV dealer. I simply told him the truth, that I was not and that I had contacted every RV Dealer within a 100 miles from me. I even went on line to several others and no had any information or ideal how I could buy these locks. Make a long story short, he took my order and my credit card number, and a few weeks later I had 10 new locks with 2 keys for each lock, all numbered the same. I thought that was kind of funny, should never run out of keys (20). Anyway, David Abbajay number is 503-236-9444. I hope this can help you. Let me know how things work out.
If your are talking about the latching part on the bottom. not sure were you can get them.