blacktail
Minister of Fire
If this stove is not installed to code and is a fire hazard I personally would not sink one dime of your own money to fix it correctly. There are laws on the books to protect renters from slumlords that do things cheep and unsafe to save a dime. You need to be looking at the laws that protect renters, not at how to fix the property owners stove.
Know your rights and demand that the landlord provides safe and reliable heat to you.
I'm with Mark. I wouldn't spend my own money to fix someone else's house.