navmanz, you are a step ahead of me. 😏 I have my pcx 1.5m, 5m and proxar +1 edge grounded today. Thanks for your report, I had more confidence doing that. Slight edge cracked on the 5m but as I put retaining on no one can see it. Now I have to check the centering which should be the same or slightly improves.
BTW, the guy didn't charge me anything as we are customers of this shop more than 20 years. Very nice of him.