Scotz,

The Jarrah floors my sister replaced about 10 years ago were perfectly symmetrical tongue and groove.

If the boards are fancy profiles, the simplest way to refinish them is to have a pro lift them and run them all through an electric plane to take off a few thousandths of an inch. This leaves you the equivalent of virgin boards to stain, wax estapol or fingerpaint as takes your fancy.

Good point, Scotx.

__________________
Calm, quiet, smooth, devastating