I think about 30 years ago that was about a $70 saw, new. Now you know why you were able to pick it up for $25. More than likely it appears will maintained because it was mot used much because of what you are witnessing.
You can/will get burning from a blade that is too wide for the radius that you are cutting. If burning while cutting a straight line, cheap blade.
The BS is a machine that has to have some degree of quality for you to enjoy. Typically the more money you put into a BS the better the saw will cut.
This is how my journey went.
I probably bought that same saw 30 or so years ago and it was,,, at toy.
Next saw was a 1/2 hp 10" Craftsman that I bought shortly there after. I was a real band saw and cut decently on thin stock. Because it was difficult to align every time I used it, I seldom used it.
About 6~7 years ago I bought a big Rikon with 2hp to replace the Craftsman. I wanted a saw that would be my last BS. IIRC I paid around $999 on sale. I ordered it sight unseen with the understanding that I could return it should I find it not to my liking. I returned it less than 2 weeks later.
It has been my findings that I needed to step up in quality to fore go having to putz with the saw every time I wanted to use it. I expected/expect it to be ready to cut when I walk up to it and turn it on. NONE of the previous saws afforded me that luxury. I spent way way more than you are probably thinking of spending but I am very very happy with the saw and it eats every thing I throw at it with no fuss. It is my last and probably my son's last saw should he one day decide to keep it.
If you really have the need or want a BS I would advise looking at an older Delta or something that has a lot of steel or iron in it. Plastic and aluminum is not going to leave with a happy feeling.