Yeah, that's nice to hear since I have FOUR of 'em… Yeah, go ahead and say it, but I got the two 556SD's pretty cheap and one of the two SDN6's for a good deal. They're good cans, just shitty mounts and the CS was abysmal.
I was expecting to hear another horror story too, kind of. I got a FH 51T mount for an FAL and they wouldn't replace it, gave me the run around, then wanted me to send the whole rifle in along with the can on my dime, both ways. Just wouldn't take my word for it that a can wobbled and I could see an eclipse. 3 YEARS later, never having shot the FAL with a can on it, when I heard they got bought out, I immediately called and told 'em the same thing. It did take 'em a few weeks, but they sent me a new one and it works. I didn't have to send my rifle in and they took my word for it. I was glad to get it and figured they were busy as hell and that's why it took so long. I wasn't complaining at this point, this mount actually fits well enough to use safely.
FWIW, I found the best way to deal with the mounts isn't to work down the bevel, but to buy several, say ten of 'em, then fit 'em all to the can(s) and just pick the best one(s) and return the rest. It sucks and it's a hassle, but it does work VERY well and doesn't void the warranty like working the bevel down does, and the dealer can still resell the returned mounts. The brakes are the best IMO/E.
As for the latch, best way is to depress and hold it when you take it on and off. Ratcheting it just wears the teeth out faster IME. My biggest fear is replacing the latch, then getting it back and it not lining up on my mounts anymore, which are all dead on, tight fitting now. Before this thread my biggest fear was warranty work, period!
But so glad to hear you didn't have a problem because one day I'm sure some of these will need to go back for one thing or another, and surely for latches at some point, so awesome to hear and also glad they are unfucking themselves. 8 days no fee is up there with stellar, five star CS man!