OK, its now DD and only pulling 2.96A 
Tried with one battery, got 2.56A :~ so its not shortage of current to the driver.
While I was measuring the current at the switch I got a 3.6~3.8A reading, then I started to act like a woodpecker, switching between the modes just stopping at full long enough to get a reading, the mystery turbo was very intermittent, not predictable and I cannot get it at all using the switch.
This turbo mode was mentioned a few times in the ZY T08 review thread Review: Small Sun ZY-T08 2 x 18650 (Parallel)
So it looks like the driver is not in DD even with the resistors shorted out, no use to me so when I put in my next order there will be a 8*7135 (380) driver that I will stack until the amps stop going up >)
That will give me some time to get some copper inside the pill.
Cheers David