Help Please: IOS 3A Multi-Cell Driver

So I recently purchased this driver from IOS, with the intention of driving a MT-G2 on a Noctigon board from the same supplier.

I changed the leads to 22AWG solid core leads and the LED works beautifully but after about one second, the driver's thermal management kicks in and blinks once every five seconds, corresponding to a "driver overheat."

So, in all my intelligence, I touch the driver, even dare to grab it with my whole hand and it is COMPLETELY cool to touch. Even running it in this blinking mode for 10 mins and the driver is barely even warm.

Did I screw up my lead soldering?

Is there a way of 'disconnecting' the thermal protection?

Is my driver simply a throw-away?

It sounds to me like the low voltage protection is kicking in. These MTG’s use lots off current which sags batteries very quickly.

Product description says that it'd flash twice instead of just once every five seconds if there was low voltage though?

I'm running this light on 3x KingKing ICR26650's in a 3S config and voltage across them is 12.6V no load, 11.1V @ 3A

Thanks for being the only person who's replied. :)

Run the set up with two cells cee what happes.
if the same thing, disconnect MTG and connect XML then test again.

Isolating problem sources, should've thought of that.

Thanks