So i just took part my Fx5 and I replaced all the bolts and nuts holding the motor in place, as one was stripped. Possible air could get in there if it wasn't sealed fully this whole time?
I learned a trick online using teflon tape around the top cover thus holding the seal in place and even aiding in sealing. No filter floss took that all out a while back. and top basket is empty allowing more flow. No lines kinked or slack really everything is tight and together properly. Guess i will wait a day or so and see what happens.
Thanks for all your help tho guys. I am still considering a sump tho, How big would it have to be for a 220 and what is a recommended return pump size ?