Goodorning this would be my third season opening my new pool we ordered from pool factory. I had it install from local pool installer now my question is. I spent the extra money on a 25 mil liner is it possible that 25 mil would have 2 holes in it? That I only noticed when the pool walls were rusted on the outside this is crazy 2 years old andy liner has 2 holes init and not even on the floor upper top how can that be. Is that normal for a 2 season liner to have these holes and now to order new wall and liner that I'm gonna have to pay for and to worry about it happening again. Any advice in why this would be happening?