Ross Momentum. Drag was inconsistent and screeched
This sounds like my Bauer M2 superlite. The original spool does this. Sent it in but they just sent it back with more lube and the problem continued next trip. Found that the spare spool I had bought but not used works better. Obviously it is the original spool that has a problem. I will try again with more detailed instructions.
They only chatter if you don't maintain them. For $35 you can upgrade to the newer spool-side drag material, its beige (as opposed to grey) and have the 2 roller clutch upgraded to a much stronger 4 roller clutch. Make sure you're using the oil Bauer suggest. With maintenance, Bauer drags outperform all the other high end drags I've owned... Ross, high end Sage, Islander.
The Ross Momentum surged bad- full drag to almost freespool and back again. Owned two of them, returned to Ross, they fixed the first one, but the surging came back, had them both serviced again, then sold them. Lost a few springs and steelhead because of it. There are better reels for the money. I don't mean to bash Ross, their customer service is great and lots of guys I know like them, but steer clear of the Momentum's carbon fibre drag.
I now own a Bauer carbon fibre drag (CFX spey) in addition to several cork Bauers and the CFX drag is butter. Taken a couple big fish on it so far and been 100% satisfied with the performance of the said reel. The Bauer is $100 cheaper too. Nicer fit and finish too IMO.