I just bought 1/2 cord of wood that I was told was seasoned - mixed maple and fir. When it was delivered the fellow told me that it had been down for several years but split recently. I checked a number of pieces with a moisture meter and got readings in the low 20s generally. While I know that the wood should have been split for a long time to be seasoned, am I correct that the issue is moisture content, that is, once this wood gets below 20% it will be good to burn? Thanks.