So I left line of WindSeeker because it got stuck at the top (completely other story). So I decided to go towards The Beast but when I was passing Vortex I heard this loud screeching noise. I noticed when I looked it just came out of the corkscrews so I decided to watch it go through another run. When it reached the point of the corkscrew when you're upside down it made the noice again and there were sparks or something coming out of the wheels. Does this meaning it might be nearing its end or does it just need refurbishment?