Anyone have any tips on how to land the PKZ Corsair? I've been greasing them on, but then it veers right (always right) and flips off the side of the road. I've already broke one prop...

Have you tried running the plane on the ground at low speeds and see how it tracks with the controls centered?

Some of the rightward tendancy is because of right thrust, some is also because of torque, but the plane should track somewhat straight at speeds well under flight speed.

It could be that the tail wheel needs adjusting, etc.

I had to bend the tail wheel strut a little to get it straight with the trimmed rudder. I now land only on grass, so it doesn't matter anymore, but you will want to check that.

When I land mine, I generally like to touch down on the mains then let it roll out on its own until the tail drops. It usually rolls pretty straight. Once the tail drops and it has slowed down sufficiently I give it up elevator to plant the tail wheel and steer it normally. You might try adding a little toe-in to your mains.