I have no experience with the Gryphon, but I did buy a used Diamond Laser 3000 XL bandsaw and have essentially unassembled and reassembled it. (I read a review of it on Amazon.com AFTER I bought it, but for the price, it was really hard to pass up.) I bought the guides and a new blade that is supposedly guaranteed for life (we’ll see who lives longer.)
I also took the saw to a local tinkerer to check that the top and bottom rollers were aligned and could move in sync easily. He took it apart with me, we cleaned it thoroughly (it had been used in a classroom situation), and we reassembled it, replacing the guides and lubricating parts. We replaced a couple of rubber washers that seemed fine, but since we had the thing apart, it seemed silly not to.
So far, it is working fine without any problems. I am using it to cut two to three stacked pieces and while I am letting the blade do the work, I’ll sometimes push it a bit too hard and the sound of the machine usually eases back my impatience.
Are there cracked or worn pieces within the machine? Are the top and bottom rollers aligned properly?
I hope someone will come along and provide more than generalized ideas for you.