I had the ProChrono DLX and it mostly worked okay. It went on the fritz and I bought the LMBR Shooting chronograph instead.https://lmbr.pl/products.htmlI think the overall design is better and more reliable.
A larger plastic ammo box makes a great carry container for a crony.
Did you try to get any warranty support for the ProChrono DLX?
Time passes….ended up using the cheap clamp to the barrel mini exclusively.