Ok, went to the trans box guys here and found out we put it together in the wrong sequence, we put the tork converter on first against the flex plate then slid the box in, we should have left the tork converter on the box and separated it as one unit, so when you slide the box into the converter as I have done, you risk damaging the seal that's in front of the oil pump and maybe the pump as well, so out comes the box, new seal and check the pump is not damaged and reinstall in the right sequence. Bugger...