Having just sent a perfectly working HQ100 back as Sony couldn't give a straight answer on a SCART switching issue i am slightly gutted that the replacement suffers from screen purity issues

The whites on the left hand side have a tinge of yellow,it's so bad that while watching the F1 on Sunday the "F1" logo was dirty white/yellow when it should be pure white! What is it with Sony's QC at the moment? This TV is fantastic when setup correctly, seems they just want to ship as many boxes as possible and worry about any problems later! (Although i must admit that most people wouldn't notice the purity problems but when spending 2K on a TV i would!!!) The T is being replaced,this will be my SIXTH TV this year! Three FS76U's all failed within a couple of months and now this,it's getting embarressing sending these back,i feel like they must think i am breaking them! Sometimes i wish my eyesight wasn't so good!! Am i being too fussy in thinking a 2K TV should be able to deisplay a white screen OK or is colour imperfection on a third of the screen OK?