As mentioned in another forum, when I ran out of cardstock; I began building my models out of HP Broucher and Flyer Paper:
As you can see, it has a nice, glossy smooth finish, and colors print vivid and bright on it. It is especially good for painted metal finish models like the Skyray. Downside is that it is a little light (44 lbs), and it is hard to touch up with markers. I also have problems with bubbles when glueing two sheets together with white glue; but I might have had the same problem with cardstock?
As also mentioned, I also tried to refill a black cartridge for my Canon BJC-2100 printer. The printer wasn't listed on the box, but I figured all inks were the same.
BIG MISTAKE. The ink did not dry immediately when printing, causing the black to run into other colors during printing. Even worst, it smeared while handling; I could wipe some of it off carefully with a moist tissue, but you can just see a black smear on the left wing of the Gee Bee when you enlarge the above picture. Since then, I only use Canon and Office Depot cartridges.
Finally, instead of buttons for wheels and coins for nose weight, I had a box of assorted metal washers on hand that I bought awhile back from a hardware store. It's different sizes make it easy to find one to use for wheels (the Gee Bee has some); the larger heavier ones can be used in place of coin for nose weight.
Someone mentioned in another forum about keeping several models on the bench to prevent burnout; one of these days, I will finish the fiddley engine bits so I can put a prop on the Gee Bee.

Thank you Fiddlers Green for these two free models; I gave these two to my son, and made a Skyray for a cousin who has built plastic models in the past.