i would like to report that i have success!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ok so wake up head to the tank.

First step. See if there is a back pressure issue. SO i hack off about 1 1/2" of tubing on the drain and fire it all back up... no help. The Drain now sits maybe 1/4" under the water.

Step two. See if the hole needs to be bigger so i take the top of the durso off and work my way up in sizes. Did a few new holes and started noticing a difference!!!!!!!! So i just worked my way up till i was happy with the water level and now i have a fully functional durso thats silent with the ball valve FULLY open.

So if you ever have problems with your durso flushing, draining more than the pump can handle. Check the air hole first. I would give you exact size of the bit i used but its probably going to be different for everyone's pump.

Thanks to everyone who helped especially chort and sir pat.