Howdy guys,
Yup, what Osage Outlaw said. The table top bandsaw I have was given to me from my brother who couldn't get the thing to cut worth a hoot.
I bought The Bandsaw Book and I got the thing running really well. From the book, I think it has a lot to do with getting the upper and lower pulleys lined up while the tension is on. And, then you have to set up the guides.
Good luck,
Canoe