Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Impossible to maintain a seal on some valve stems

I had an older Accutire that did not work well on my new car. I figured it was worn out and ordered this Gauge. It doesn't work either. It is impossible to maintain a good seal between the valve and the gauge. Instead of investing in fancy backlight etc. Accutire would have done much better by using a high quality sealing mechanism and not that flimiscal plastic/rubber combination. Using a different Gauge with a solid brass/metal connector I have no trouble at all. In short: I do not recommend.