Instruct: Classify Amazon reviews into positive or negative sentiment
Query: FramePro 750XL - Firing Problems

When I first received this tool, I took it out of the box and fired a few test nails into some blocks of wood on the floor, and everything seemed OK. But, then I took it out to the job site, and found that it would ONLY nail when pointed down. If I tried to nail into walls or ceiling, nothing happened when I pulled the trigger. I also noticed a small air leak at the top. Needless to say, I will be returning this one. I will exchange it for another of the same model, since I have had NO problems like this before with Senco nailers. Nice features include adjustable depth, option for both bottom fire and restrictive trigger, and plenty of power to drive into tough wood. I personally prefer bottom fire to restrictive trigger, for quicker framing.