Something else to be looked at. Some cameras do not work as well with one type of film as they do with others. Sometimes you have to play with different ones to find what your camera will work best with, in what you do and what you are looking for. When I had my old canon, it worked better with the afga films than fuji, and a lot better than Kodak. But my Nikons did not work as well with the Afga (before they quit making their film) but worked good with the fuji. As of yet I have not went back to Kodak, even though I did try a few rolls with my Nikon N90, but even that has not shown any good. Maybe these newer Kodak lines might work better. I don't know, but until Fuji quit making their Pro 800 line, I never had a problem with them.
Another point is, do you have your developer adjust your images? If you are, make sure they know to watch for the different shots of indoors and outdoors. Or you can change rolls before you change settings, which could help as well.
Even changing your ISO in the different conditions can help, but again make sure your developer knows this and to watch for it.