Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Hard to keep set

This template kit is roughly made. Not easy to keep set up for any length of time (screws loosen). Can be a knuckle scraper. Problem setting the center template the same for the flip flop on the jamb.I would expect a tool of this type would be made of extruded Aluminum for better accuracy of measurment. I would pay more for such a tool. The price equals the quality on this one.I have been a carpenter for 35 years, hinged a lot of doors in that time. Pre-hung doors are the choice of course, but sometimes you have to do them on site. This tool wouldn't be my first choice.