You can try that. Trimark changed their design over the years. Some can be taken apart, some can't. On Some one of the plugs can be popped out and have a key made, the other wont. If there is a letter code by the keyway you can get a master key for it.
Some locksmiths can impression a key but it can be almost as much as buying a new lock. Some doors you can add a residential dead bolt. I did that to an Airstream. Also watch EBay for used.
My Kharma ran over my Dogma.