No Oil is being sent to motor from the oil tank

1992 FXRS-Conv. remanufactured engine from Harley Davidson Factory-

i did the the reman program though Harley Davidson Factory where i sent them my old motor and the rebuild/replace all needed parts.

2 days ago We Installed motor. started right up 1st time sounded great ran the new motor about 40 sec. shut off let it sit about 10 min. stared a second time fired right up, 10 seconds later the oil light came on.

shut it down checked the oil tank. We have sufficent oil, pulled the oil pressure switch, cranked motor, maybe 2-3 ounzes of oil came out.

We pulled the all the oil lines that attached to the oil tank itself only to relize that no oil is draing out of the oil tank? nothing from any of the 4 houses attached to the oil tank not one of them will leak a drop of oil and the oil tank is full? i was looking for a diagram that shows exactly how the hoses are supposed to be attached. any suggestion as to where to start? And what does this mean it terms of potential for damage to new motor.

Please note that the remanufactures motor sat in my garage for approx 2 1/2 months before being installed. I have also noted very light leaking oil coming from the seem in the bottom of the cases?