Capacitive fuel probes in Rans S6S tanks

[Rob Turk[_2_]]

I am considering installing capacitive fuel quantity probes in my Rans S6S
tanks.
These look attractive:
http://www.aircraftspruce.com/catalog/inpages/princefuelprobes.php

Does anyone here have experience using these probes or others that use a
rubber grommet install system? Any issues regarding leaks?

Thanks,
Rob