OK, i have a Swifttech D5 pump, the dial on it is broken, is there any way to fix it so that the speed can be set from Low to a minimal speed setting . Id like to have a little more water flow, I do have a couple Swiftech MCP 355 pumps too, but i need to order new boards for them so i dont have a three wire and i can take them to a PMW 4wire set up .. , also i can not find a top that i can use with my res tube everything i found so far is for the D5 pump .. ideals or anyone have one that they would let loss for a fair price