You should be seeking help from your probe supplier.
We here can be of little help, since you haven't identified the probe you found wanting, or the machine to which it is attached, or the thickness of material that's giving you trouble.
You'd have a better chance of getting help with such a grossly incomplete query in another forum; this one is dedicated to gears and pulleys and such.
Mike Halloran
Pembroke Pines, FL, USA