My Horrorscope top sheet is performing as well as I could hope for... I've also got a Black Death and that thing is tough as nails.
Just make sure to epoxy the tears so they don't rip even farther...
Top sheet tears happen though bud, its a bitch, but it happens... The thing that pisses me off the most is when punk kids or skiiers slam into the back of your board and shred it up.
But ya I I would just write it up as general wear and tear as your the first person I've heard a complaint from as far as the top sheet goes
"When I do good, I feel good; when I do bad, I feel bad. Thatís my religion." - Abraham Lincoln