fwiw .not all pads are created equal. You are saying the metal foundation of the pads is tight in the caliper bracket? If so take a file and dress the pads so they can slide. They need to have some drag or they will squeal when braking. also again replaced the hoses.
It's very possible you have a bad hose. They are ten years old there is no harm in replacing them now.
As for the resistance reading on the sensor compare the reading to the opposite side.