Torque converter Trouble

sometimes turning the tangs turns the pump tangs too so they never mesh. If you have the liberty of standing the thing on its tail, I dont see a problem. Of course I was the guy who didn't even see the lower splines in the bottom of the converter due to fluid still in there and I was looking for a non existent xx spline convertor...We wrestled with a Toyota transverse trans trying to get the convertor to line up and we took a break. Came back and the thing had fallen into place on its own. Strange.....