Manual more effective than electric?

C
My Medela hand pump is more effective at emptying than my Ameda double electric! It's a pain. I have to hand pump at least once a day to make sure I've fully emptied my boobs. Just went a couple days without doing that and had to work out multiple clogged ducts. Pumped 7 ounces out of one side! 😳 Seriously considering purchasing a different pump...