Bowden tube and wires getting stuck

[kiiwii]

Twice when I've tried to print over a moderately big area of my build platform, the bundle of wires and bowden tube coming down from the top has gotten stuck on nuts. The steppers thus skip steps with a grinding noise and the job is ruined. Has anyone else had this problem? What's the proper length for the middle bundle? I may have to find some way to pull it back up the top plate and fasten it.

[kiiwii]

On a related note, the layer fan crashes into the binder clips when printing the first layers near the edge of the plate! Any remedy for this besides removing the fan?

[Broose]

Twice when I've tried to print over a moderately big area of my build platform, the bundle of wires and bowden tube coming down from the top has gotten stuck on nuts. The steppers thus skip steps with a grinding noise and the job is ruined. Has anyone else had this problem? What's the proper length for the middle bundle? I may have to find some way to pull it back up the top plate and fasten it.

People use a retractable badge clip attached to the top to apply a constant slight upward tension on the wires/tube and that keeps them out of the way.
http://www.amazon.com/Retractable-BLACK ... B0019N3RDY

I moved the hot end to the far corners almost touching the bed and made sure the wires are long enough to handle that plus add a little bit of slack, then I tied up the excess.