No shroud on the front, I've checked the rotation on the fan, it's pulling for sure. I've also checked that the pump is working properly, and it is. I can't decide if its' timing or just moving the water too fast. I"ve got one more restrictor to try and move the fan to the back, (thinking that I may be obstructing some airflow right now) and i'll head back to the track an see how she goes.
thanks for the input, it's well appreciated.
chancey