Did you use any type of compound on the cylinders where the sensors connect? I cleaned all the old compound off and used my new compound on reinstall. That's the only thing I can think of is there is some sort of interference at the cylinder itself.
Please follow up with us after Klaus looks at it. Or if it was as simple as applying the compound to the sensor areas.
As all here know that pizza guy is the resident expert on this matter and many others as well.
I am looking forward to his thoughts.