I just installed my locks yesterday, its a great improvement over the old locks. For the shower I took one of the nuts off the old lock and used it as a spacer, now it has plenty of room to turn. This is a costly mod but well worth the money for the convenience.
We got some of these nifty thumb locks and what a joy to be able to access the cargo areas easily! Thanks for all the good info of those that have gone before me and worked out the kinks. I have to say they were not too easy to assemble and the bag of little parts were intimidating but it was worth it in the end!
Changed all my compartment locks in the early spring when i found out that all compartment keys for all trailers are the same. Also found out recently from another camper that the door handle locks work with any campers door key. When I changed mine I got new door locks and the compartment locks keyed all alike and they are double sided keys so they aren't the same as others. Less likely that anyone has the same key. Wish I had of ordered the thumb locks though with the double sided keys.
Think about things before you do them make life easier not harder.