I just finished doing the same to mine. I made a crossover between the "reserve" and "on" channels to let more in. The filters are the most restrictive part, so hopefulley two will be better. I ported everywhere the fuel flows. I made the channel bigger, and gasket matched it. The last thing I did was to open up the port infront of where the two outlets are.
Basically I wasted 3 hours. But, I had fun.