Duo_Cool2 map

[Wal-Mart]

Hi there,
I have been trying to finish the Duo_Cool2 jump map in COD 1.
We get stuck after the floor explosion.
We enter inside the doors. We open the vents and get back upstairs. From there, the only way to jump the holes is by using a grenade, we get to the other rooms and we get stuck there.
I am thinking that it is strange to jump the holes with a nade. It feels like we should do something to reset the floors. Any help would be appreciated. Thank you.