Is it because it just cant handle the heavy dirt i try to vacuum? or is there some other thing wrong with it? It looks fine but could it be that the material is too old? I found it in my backyard, my dad had it since...well...i have no idea. Does too much dirt make it prone to falling off? Cause I notice theres a long of gunk at the bottom when i open it. Im really hoping that thats the issue but i need someone to let me know if this perfectly fine looking material is just bad. Also is the pump good enough?