This did remind me to check and adjust my hammer. I need to remember to do this monthly or more often then 6 months or more. Anyway it was off a little in x with dial to front. Can be tricky to adjust, I first loosen all the sets screws a tiny amount. Then rotate hammer using belt drive wheel. Carefully adjust screws in sets. Get it on 0 then move away . Remove probe and turn as desired put back in. Move back on indicator, check and no change.

For me a hammer is a must like a pdb. Makes setting ucs simple, fast and accurate with 1/10 the steps I use for edge finders and height indicators.

I would replace r8 collet and adjust draw bar and lube as per instructions. Also I would check the probe on a spin indexer with 3/4 collet as a control. This could help rule out holder issue.