Will the 777s have PTVs throughout the plane?

This is a very good question, as I discovered the answer when I flew United to Hawaii back in February. UA’s 2-class 777’s and 763’s do not have the PTV’s in economy, or ‘first’ class, for that matter. These are used for domestic non-hub-to-hub routes only, and I suppose they didn’t feel the need to have the PTV’s in aircraft not used on INTL routes and hub to hub routes (like DEN-ORD, ORD-SFO, etc.). UA’s 3-class 763’s and 777’s do have the PTV’s.

One question that comes to my mind is, were these 777’s ‘retro’fitted for the purpose of serving Hawaii by having the PTV’s removed? To my knowledge, all of UA’s 777’s were delivered in the 3-class configuration, as prior to 9/11, they were only used on the Intl. and hub-to-hub routes. Once the DC-10’s and 747 classics were withdrawn (which coincided with 9/11), 763’s and 777’s were transfered to the Hawaii routes. I’m assuming United had taken delivery of all their 777’s by the end of 2001, as they were the launch customer. Therefore, it is safe to assume that they had to re-arrange the interior of said 777’s and consequently remove PTV’s from them. None of the 767’s at that time, to the best of my knowledge, had the PTV’s so they only had to re-arrange the seating in those. 3-class Intl 763’s had PTV’s installed in them in the last several years, I believe. If anyone can confirm this (Wrenchbender perhaps?) that would be good.