WOT and fuel pump issues

anyone know of any issues with the holley black lable fuel pumps? mine isnt giving me reliable pressure even with it on a regulator.. it reads 7psi a few months ago with my new carb install. then last night it was reading 2 psi so we adjusted it back to 6psi.. then after turning the car off and then starting it again the went up to 9psi. its this a common issue with them not giving a constant pressure.. if i replace this pump what would be a good inline?

next question. im unable to get to WOT with my peddle to the floor. if i adjust it at the carb then the carb wont be set right cause it will pull on the carb. how are you guys getting WOT if you need more travel on the peddle?