We have not seen many reports of Sigelei displays getting displaced due to overtightening the tube for the past 6-8 months. This problem was reported more often with the first generation V3s. This problem seems to be rarely encountered with second generation V3s and V5s.
Yzer, I don't want to come off as a spoil sport, but I personally wouldn't feel comfortable saying the same thing. Every V3 I've come into contact with has had this issue sooner or later, regardless of the version (eight V3's that I've disassembled thus far). In every case, either the glue holding the U-shaped support was broken loose from the inner tube wall, or the circuit card had broken loose from it's tracks in the U-shaped support. I will however say that even though they had broken loose, only about half of them led to a problematic shift in the display and button. Sometimes it was an issue and sometimes it wasn't.
It's also quite possible that people with issues that come searching for info on this thread don't always leave a comment, so I submit that just because we haven't seen a significant number of complaints does not necessarily mean it isn't prevalent. I feel the same way about the button issue as well. I personally have seen nothing to convince me that the button used on the original V3 is any different than the button used on the latest V3's. I've owned both versions and both failed me after about the same length of time. Friends and family members who also own V3's (purchased on my recommendation) have all likewise seen the same problems (
every single one of them). Was it just bad luck that all of us got faulty V3's from a bad batch of them in both versions? I suppose anything is possible. Thankfully, not everyone has experienced these problems, and I'm happy for those owners.
Regardless of its flaws, you won't hear too many complaints from me because it's a very affordable device, its relatively easy to repair and modify to overcome both of the previously mentioned issues, and when it works - it works great. The stainless body is also very tough, great looking, and physically provides for several battery options. I'm not ashamed to say that my V3's are what I use exclusively every day and I'm looking forward to getting my V5 any day now in the mail (hopefully tomorrow).