Instruct: Classify Amazon reviews into positive or negative sentiment
Query: These are really good slides but use caution before installing

I installed these slides for drawers in a small coffee table for my daughter's living room. They are well made and work beautifully. Sadly, I left them on my work bench (out of the plastic wrap) and they got covered in saw dust. This caused a rough sliding action and I had to clean them (tedious but not difficult). My bad. I gave them a 4-star review because one slide was missing a piece of plastic that prevented over-extension of the slide. Since this didn't really effect the slide operation, I went ahead and installed it as we had to drive to Chicago to deliver the coffee table to my daughter the following day. This product was shipped quick so I believe the vendor (Woodworkers Hardware) would have replaced the slide if I had requested.This is my first review of a Amazon purchase.