maybe you're not looking in the right place, the "box" is not seperate from the column/shaft, and further on you'll find the shaft/worm are different for series 3 and series 4/6 ... probably length

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics