Greg, there is one part that can really hold up model production. You have a pretty good collection of paints on your shelves. Most of us have something similar, whether it is shelves or drawers,,,,,and we think we have enough paint to do that project that suddenly inspires us to get started on..
Then, we start pulling down or listing the colors that we need to build with,,,,,,,,,,,,and we don't have one or two of what is needed for the project.
Or even better,,,,,,,,we bring home a decal sheet from a show, direct from the producers hands to our own,,,,,,,we take it home, look over the profiles and pick one to build. And then we find out that we don't have a single bottle of Middle Stone,,,,,not a good match, heck, not even a "bad match that I can sneak in just this once",,,,,,,,soooo,,,,,we buy paint, lol.