[l4d2master]

I am using the weapon vairety mod http://www.l4dmaps.com/details.php?file=15454 and it puts the chainsaw in the grenade slot so when i try to drop the chainsaw, it drops my pistol and gives me another one but does not drop the chainsaw. can you fix this so that it will not drop my pistol but does drop my chainsaw even if its not in its origional slot?