Is the DMT DuoSharp base adjustable to fit different sized stones?

The DuoSharp base holds our 8" and 10" DuoSharp stones. No other stones would be able to be clamped in to allow active use while in the base. Without a base the 8" DiaSharp stones are heavy enough to sit on rubber feet and not move, however the 10" DiaSharps are too wide and may tip off of the feet when edges of the stone are used. Within the Duosharp base there is a cut-out in the center that 6" stones can fit into for storage but the clamps are not adjustable for 6" stones so note that these stones cannot be used while in the base.