@ajkula66
Mark Hopkins, The Program Manager for Lenovo Social Media, has been in touch with me. A new case number has been assigned from both Atlanta (where some poor chap had to get an earful from me - Sorry

He was very professional in the face of my verbal dive-bombing) and also from Mark. I just sent him a PM updating him about all this.
seems like my trusty old Tecra will need to be unpacked. Five years old, cant live without an umbilical to the AC outlet, but chugging along without any such issues.
Maybe I did get a lemon. On the whole, the T420 seems to have a positive vibe all over the internet. The sexier sibling, the T420S seems to be the one with more than its fair share of threads on this site, discussing one problem or another. I made my choice between the two based on my needs and usage (generous port selection-mainly eSATA, longer battery life with one pack attached only, 9mm drive compatibility, less frequent travel and mobility, etc.) so for me to lament my choice of product is pointless. The machine was chosen because it ticked all the right boxes for me, and my expectations of reliability and quality were reasonable.
I could have gone and purchased a Macbook Pro if i wanted a very solid, flex-free and high-class product. but that would have given me a computer that despite being housed in one giant heatsink, still manages to get scary hot and throttle down, with a truly awful keyboard, and for the price point, specifications that are lower than the competition.
Plastic/ABS/CFRP etc. will flex, it's their nature to do so. Smaller, thinner and compact systems will flex less than their larger brethren because there is a lot less area available for compression forces to act on, and frankly, I'd prefer my notebook not to shatter because the market demanded harder, more brittle materials that appeared to be stronger, but were completely the opposite. Plastics and Composites are a fairly advanced science, and it is easy for a layman to expound the quality of one kind of plastic versus another, without knowing what its properties are, and how they are used in applications.
My expectation was not a system that felt like it was chiseled off the monolith from 2001:A Space Odyssey, but a fairly well bolted together machine that does what it says on the lid.
That is not what I got.
even if the system does get replaced, the foul taste left in my mouth by the carelessness and crudeness of EasyServe's methods have made me reconsider my choice. there is no telling what unpleasant surprises the replacement may bring, putting me at the mercy of the same wrench-wielding poltroons that had their way with my computer twice.
I shudder at the thought.