Bought these to replace stock tuners on "Domino," my Squier CV 70's Telecaster Thinline.Installation was simple...perfect alignment with the existing /screws and tuners, BUT...Replacement grommets that came with the tuners were a bit smaller than the existing post holes and kept falling out. But I don't blame this on the manufacturer; the grommets they shipped were what was promised. However, I didn't want to shim the new grommets. So I just left the old ones in place and completed the install with no issues.I put a new set of 10-46 Elixir Nanos on and locked the tuners down on each string, then cut the strings. As I began tuning each string up, some of them slipped/popped out of the tuners...several times. I was kicking myself for cutting the strings too soon. So I grabbed the needle nose pliers and rethreaded the strings. Also, I brought each string up to tune over the course of 12 hrs to allow them to stretch and keep them from popping out under tension. This worked fine, although I've never experienced this before with locking tuners. No other issues since that time; they seem to work really well.Tips:1. Regardless of what people tell you, locking tuners do not improve tuning stability versus traditional tuners. They primarily make it faster/easier to change strings. If you're looking for better tuning stability, your bridge and saddles are more likely the issue.2. Once these tuners are installed, restring the guitar but DON'T CUT THE STRINGS YET. String it, lock the tuners and start tuning up. If the strings keep popping out as tension increases, leaving the strings uncut will make your life simple as you just lock the tuner again and partially tune each string. Come back in 4-5 hours and tighten it again. It may take a few hours to stretch the strings.3. Also, the string slippage may have happened because I use Elixirs and they're coated...but who knows. If it's the Elixirs, it doesn't matter to me because the superiority of the strings is worth a little bit of hassle.