I think most of the upgrade was in the controls. Does yours have an igniter?
If you have the man power to move it outside, you can give it a good cleaning with compressed air in exhaust passages and blowers. Some folks use a leaf blower hooked up on the exhaust and use the vacuum ability (search leaf blower trick). Just be sure to disconnect vacuum switch (aka pressure) and be careful with the firebrick panel. If inside, a shop vac with drywall bag will keep dust minimized. You likely should start out with fresh gasket for the exhaust and check the door gasket The exhaust blower will need a couple of drops electric motor oil ie 2-in-1 blue label.
If you get it outside, you can give it a test run to determine noise level and general function of all components.
Forgot to mention about Snowy Rivers, she burns shells instead of pellets
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Stovensen is from Denmark... usually some lag time on conversations