I'm having a problem with a sabroe ice machine . It has a float liquid level control . Lately I've notice that it would shut off with nothing tripped . I attached a manifold and spent an hour watching the pressure go from 8 psi to 2 psi and back again . Just be for it shut off , the pressure continued to drop below 2 psi to 6 inches Hg . I'm thinking the float is sticking close . any one else have a different opinion