Don't wipe your permissions. All you need to do is add the uid and gid to the mount:

sudo mount //computername/sharename /mountlocation -o user=whatever,uid=$UID,gid=$GROUPS,rw

  It tells samba to make it appear that all the files are owned by the specified user id and files are the group id  created with their username. The user id and gid it specifies are the mounting user.