Just finished a gravel bike build with SRAM Rival 1X with 10-42 cassette. I've always been a Shimano rider, so have no previous experience with SRAM or 1x. Everything worked out fine except a have a little drivetrain noise, but only in the 10T cog. All others are extremely quiet. It almost seems like a chainline issue, rather than RD adjustment. Works great in all other cogs, including 42T. It also acts up if I back pedal in in the 10T cog. Chain does not derail, but gets very rough. I gone over the RD settings a bunch of times and cannot get it right. I admit that I 'm not very familiar with SRAM, especially the clutch RD's. One other difference is that I'm running an Absolute Black direct mount chainring on a Rival 1 crank arm -- no spider with this setup. I wonder if this changes the chainline and might require a crank shim to make it better???