The reason your car doesn't have the adjustments on the handle itself is because that it an E46 shown in that first link. E9x cars don't have any adjustment there. I never put the parking brake handle mechanism in "service mode" when I'm adjusting them. I only use that feature when I need to completely remove the cables (to remove the gas tank, etc.).
Are you sure you've properly re-engaged the cables at the handle mechanism area when testing the system? If the system is in "service mode", the shoes will not hold at all. The only other reason I've seen them badly mis-adjusted is when one or both of the parking brake shoes are toast. I'd recommend taking off the rotors to inspect and clean them. It also makes adjusting them a lot easier.
Hope that helps....