I just noticed your Post's re thinner CZ83 Grips. First off..JK Custom Grips has closed its website and is reopening as KGRIPS.com. This should be up very soon.
In the meantime, I custom carve the CZ83 Grips. Also, I can take the finger ridge out so that it is flat, and can remove the collar around the Mag. Release button. What I do not recommend doing is reducing the grip thickness from the existing 1/8".
Email me with your specific requests and I shall try to help.
Thank you,
KGRIPs
Jerry Kelly
jerekelly@bellsouth.net