I'm sure I'm being a dummy, but I suddenly am getting no signal continuity through the spring hook tip when placed on one of my P6133 probes. I'm just about certain I used this same spring clip on this same probe when I cal'd the probe using the cal signal on the scope. The probe itself is fine if I remove the clip and touch the probe tip to the cal point. But when I put the clip housing back on I get nothing. I even tried it on my other 6133 and nothing.