@wevsspot
I've been running a 360 Drive since they came out. The best way to fill & bleed, is to build your loop and fill outside of the case. Put the radiator as the highest point and dangle the loop. I put the rad on the edge of a table, dangling the hoses and blocks. Fill throttling the pump motor until there is no air in the loop. To seal the rad, I top off the rad fill port to a reverse miniscus and then screw the stopper in, wiping any excess water that spills.
Now you should be good to go. Install loop back into case. The loop should be silent after that. The pinging you're referring to is a small amount of air in the loop.
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