Can get the Tadao M3 Chips...I think the DM3 is a board replacement, or do you know what version board is in there, as you can get upgrades for version 3 and 4 to 5.
Scars we spoke on the phone about this one mate.
You either need to contact Will HERE
or if you wish to buy just the newer chips rather than upgrade, I can get them for you by next week.
Alternatively I can send the boards back for you to be upgraded.
These are really the only three options for the Tadao, but you won't regret sticking with it!
If the DM3 has a Tadoa 3, 4, or 5 board, i can do the upgrade for £15..if the boards need to be sent off, then Tony is probably your best bet, unless you want Virtue of course...