Just wanted to bump this back up - ironically I broke my first omega spring this week.
So couple of items of note - this was for a bugout, may vary by model, but I don't think so... I didn't even know it was broken at first. I went about a day of playing with it before I noticed it was broken. I was comparing it to the new mimi bugout and was slightly surprised that my fullsize was feeling more "spongy" in the action... then I looked close and realized that a spring was broken.
So this demonstrated to me that an axis lock can function fine on a single spring... at least in the short term. And yes, it will put more wear onto the opposite spring, but if I'm out hiking or hunting and break a spring, I'm less worried knowing that it still functions until I can make it home... so that is good as an experiment.
The bad was that this is a 2 month old knife, and tho I do play with it a lot, it still broke pretty early IMO.
So on to the third part springs. I had 2 sets of the Etsy Omega springs just waiting for such an occasion... I replaced the springs in the bugout and here are my thoughts:
I definitely like them... I prefer them to factory... they are stiffer... by a good 30-50% I would say, but what this does is really improve the detent and lock up of the knife. I like what it did to the bugout enough that I changed out the factory springs on my custom mini crooked river to the new springs as well (those who are wondering, the mini CR uses the same springs as the bugout). Both my bugout and my mini cr had extremely good actions beforehand (the custom shop mini cr has the best axis lockup and action of any Benchemade I have tried... except maybe the Anthem... but it is different and smoother then the anthem) but after the spring upgrades, they were both able to be tuned to be completely drop shut (holding the knife slightly off vertical, pulling axis lock, and falling all the way shot without any wrist action) while at the same time having 0 side to side or up and down blade play... as well as improved detents.
Maybe it is due to the G10 vs metal bolsters, but I feel like the bugout is slighty stiffer then the mini crooked river with the new springs... bugout is probably that 40-50% stiffer axis as opposed to maybe 20-30% stiffer on the mini cr.
I'll try and update this if I ever have one break... but in the meantime, I'm quite happy with the springs and will buy some more to have on hand.
I did drop a few drops of lube on the scales where the springs will rub in an effort to cut down on friction.
As always YMMV - but I like em