Absolutely. Why Luis opened this thread and now reopened it only he knows. He started out with complaints, most if not all of them are subjective and all of them are offered with no proof. Let us review them:
1. Griptillian 556/551: Off center. Issues with Lock up (up and down on both).
So what if it's off center, if it does not rub. What "issue" is it loose? Was it fixed?
2. Mini Barrage 586: Major Lock up issue (up/down play that would rattle) uneven primary flats.
Show us what this major lock up issue is. Did you send it back? What is a "primary flat" and how uneven was it?
3. Sibert: Issues with blade grind, and not flush scales.
What do you mean by "issues"? The scales are not flush with what? The liners? Can it be seen w/o magnification?
4. Barrage 581: Issues with lock up (up/down and side to side play) off centered.
Lets see a picture? If it has side to side play, did you send it back?
5. Contego fixed blade (uneven blade grind, not sharp from factory).
Blade grinds done by humans usually are not perfectly symetrical unless it's done by a master. Most people are either right or left handed and thus a slightly uneven grind. Just sharpen it out. How dull was it? Probably just a burr that could be removed with a strop or two. I guess you cannot sharpen it yourself?
6. Lastly my latest purchase: 940-1. Off center. Uneven blade grind. Off center. Rough/gritty action no matter how I lube or clean. Lastly protruding screws (seems to be the case with all 940-1's).
Well off center again, does it rub? Imperfect blade grind, and gritty action. Did you send it back? By your own admission the protruding screw appears to be the way it's supposed to be.
Lous G. maybe you should up your collection budget to the level of William and Henry or Chris Reeve. You might be happier.
Personally, I have bought Benchmade since 1998. In all those years, I have had three "issues" with two knives. I bought a Spike (discontinued stock when bought new) with a loose blade knowing Benchmade would fix it and they did, for free within 2 weeks. I bought a Stryker auto and it had lockup problems after about 3 years of use. They fixed it for free. After about 10 years, the Stryker spring broke and they replaced that for free as well. All my other Benchmades were/are perfect (to the un-magnified eye) and except for surface scratches and my own mistakes are in great condition. The BM42 I bought new, first run, is the production knife that has increased the most in price of any I've bought...I sold it, used, this year, because my BM31 is more fun.
Oh I forgot, the Spike hit the floor 10 years after it was discontinued and owned by another person. It was sent back and Benchmade replaced the blade for a nominal fee. I don't thing that their competitors, Spyderco, SOG, Cold Steel are capable of doing that.