1. I accidentally knocked just one depth gauge down too far on one of my RSC chains today, while experimenting with grinding depth gauges on the grinder. By too far, I don't mean a few thousands of an inch. It's half gone! Is it a bad idea to continue using a chain with one depth gauge mostly gone? All the rest are set at 0.025". 2. I tried grinding a wee-little H36 chain for my Husq.T435 for the first time tonight. The recommended top plate angle (right from the Husqvarna T435 manual) for the factory chain is 80 degrees! I ground a few teeth on the factory chain (green label crap) to that, and it just looks all wrong to me. My other chains for that saw are Stihl Oilmatic 63 PMC-3 52's, and they look like they're sharpened to the same 60 degree top plate / 30 degree vise angles I use on my RSC chains. What gives?