The greater height of the tower means that a longer hoisting rope is needed. To accommodate this, larger drums made from Chimney Adapters have been fitted. These had to be moved to the counter jib. The hoisting speed can easily be adjusted by altering the drive from the motor. The Slewing drive has been slowed down - the 19/57 combination has been replaced by a 75t (Märklin)/11t one. My simplified motor mounting allowed this. Some other bossed wheels have been used and some of the small flexible plastic rings be miniature collars made by a friend.