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Probably quicker and cheaper to just purchase a complete new set of cam locks - they are available from a myriad of places.
Search "water door lock" in the "advanced search" function. This is a different lock, but (I think) one lock fits all. Not nearly as inexpensive as the cam locks for the hatches....you are on your own with the door locks - please post your solution.
Remember, most everything has been done before, lots of pictures here if you go looking for them. Some solutions will be easy, some not so easy.
Post lots of pics and take even more - document everything - leave a pack of Sharpies in the trailer to mark each piece you remove on the front, back, and sides.
You may find this link interesting: