Where in NY State are you? It's a long way from one side to the other.....As much as you love the unit, you might consider the costs to repair. Call New Yorker Boiler Co with the model and serial number and get the manual.
That is a good start. You might find it online here in the forum. They will direct you to a supplier or Supply house that will help you out.
If it is too far gone, don't flog a dead horse forever.....A picture would help tremendously, since there may be many burning in them right now on this forum.
Also goggle the boiler and see if there are any users that might have additional info.
Go up to the top right corner and type you info in the goggle box and press enter. You will see the links you are looking for. Relax, sit down and read on. Welcome to the NEPA forum.....200 lbs a day is a very high usage rate.....new gaskets, door pins...check the whole thing for air leaks.....barometric damper installed? Any idea of how much draft you have? Does it suck you hat off when you open the boiler door? What is the stack temperature? This isn't scarey, but there a number of things that have to be in place to made the best use of the coal appliance.http://www.newyorkerboiler.com
I just looked and the manual is available along with the product data sheets. Go to products, select steel boilers, then Wood/Coal, and presto, everything you want to know for free...even contact numbers.