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Sounds like he wants to charge you for an extra drop
If I remember correctly there are limits to how short and how long the run can be.
Also no 90 degree bends (think loops and sweeps) no running parrallel with electric. If you do, I think it has to be 24 inches away.
The "stickout" or the ammount of twisted pair showing at the termination ends has to be the absolute minimum while maintaing the twist.
From memory tia568 has more to do with wiring configuration. Such as 568a and 568b where the latter is more common.
I havent done this kind of work in a long time since the construction industry took a nose dive but I am bicsi certified and was a systems engineer for a company that installed many cat6 wiring systems.
For it to be truly certified the run must pass a test by a machine that checks the length, data speed, noise etc.
Hope this helps
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