www.sourcingtimber.com can source the very best of Kiln Dried Timber C16/24. www.sourcingtimber.com has numerous  suppliers all of whom dry their "KD" for a minimum of 4 days getting a moisture content of around 18%. The KD can be sized or left rough,  www.sourcingtimber.com can also source CLS. Min order 500cbm.