Mine came apart at 500 hrs. I did attempt to re-glue it, but if the alignment isn't correct, it produces some inaccurate indications. I ordered a new one from Acft Spruce and due to improper package (crushable envelope) the first two arrived with the sensor blocks bent over and the wires pulled out. The third one came on a box and was okay. The sensor is a bit fragile, I put a rubber grommet on the inside to hold it in place on the wire and reduce the exposure to vibration and a tie-wrap around the exterior to put a slight compression on the ring to hold it together. Stein makes a robust current sensor block which might be a better long term solution.