I'll try a couple of cheap Zinger props today and let you know.
I took a look at the plug and there wasn't much carbon or any oil at all, just a mild amount of tan colored debris on the insulator.
I'm using a synthetic blend type oil for break in.
Other than the stupid mistake I had using a glow stopper in my fuel tank and having a few engine outs before I figured it out, the break in proccess has been noneventful.

Keith