Instruct: Classify the given review as either positive or negative.
Query: Not so great

I've had this gun for a little over a year and it is a dog. It worked great the first time out but it has malfunctioned in some capacity ever since then. I've shot less than 300 nails with the gun and the first problem I noticed was the exaust leak. Since the second time I used the tool, it has had an exaust leak. I've broken the gun down, checked all of the seals, cleaned everything and the problem temporarily goes away but it always comes back. The more recent problem I've had is the gun stops firing. I have not figured it out but it seems the air releases but the hammer does not. When it happens, I'll repeatedly bump a scrap piece of lumber until it starts nailing again.I've maintained the gun well ... oiled it as instructed and really like the weight, balance and the belt hook. It just does not function consistently. I've since ordered a Senco FP41xp and I'm hoping it performs much better.