Allow ender-thermic pumps in overworld?

Would it be possible to allow ender-thermic pumps in the overworld? I'm pretty sure its configurable so that they aren't nether only, the reason I ask is that I'm trying to pump a large lava source and the rotarycraft pump bugs out and consumes the source block it uses to connect it to the rest of the lava pool and stops working. I know that its set to nether only so it cant be used to grief so it may have to be tested with the protection system to see if its viable. There is an enderic pump socket in the engineer's toolbox mod that is supposed to do the same thing but it is still very buggy and doesn't work correctly; it randomly stops and leaves a lattice of lava and stone blocks in the well and cannot be restarted without removing/replacing the enderic socket..

 

Oh.. i thought they didn't function when you logged off. Bummer.