Shawn, this is definitely a 37 deluxe model 01826.
As you mentioned, the fork is not correct. It should be a swan style fork with the use of the duel Deltas. That fender light was added later.
It looks like it has the correct three piece tank.
Pretty nice one.
Edit: I should add that this bike is badged Speed King and is not always equipped as the cataloged Roadmaster. That being said, the fork could very well be original to the bike. I believe that three tier fork style first appeared in 1938, So it could be original to the bike. However, I still bet that fender light was added at some point. It was probably originally equiped with a single Delta silver ray or the Delta horn/light combo. My best guess based on the conduit provisions on the tank and front fender and the tank switch.