That thing is a beast. I ended up ordering a 2nd fan assembly on ebay so I could destroy the one I had with reckless abandon. Got the fan out with connector... which already had a tail on it just long enough to directly screw the fan to the front grill, getting it out of the way of my extra long graphics card. Not pretty but works! I used a combination of dikes and a Dremel to separate the fan from the housing.
If you don't mind severely altering the look of your macpro. There are vinyl film products that other PC modders use to alter the appearance of their case plastics/hardware. Should hide such things nicely (but not fix it for resale).
Hi. You can pick up the default nvidia Gfx GT120 on ebay for super cheap these days. I keep one handy just in case I need to get to the pre-boot screen. There are better cards that support pre-boot and even Metal, but this one is super handy for slapping in when I just need video to boot because of some other issue. Even Mojave will boot with this graphics card provided you installed it with a metal supported one at the time. Not a full answer but a tip for sure.
I had an ebay ipad4 wifi exhibiting extensive ghost/phantom touches, so bad you can’t log in, magnifier feature was the most common activated, but general mayhem. I also assumed digitizer, but my first replacement (ifixit digitizer) showed the exact same issues. Bodydid not appear warped, no bent corners etc. My only clue was I could sometimes get it to behave before pressing the digitizer down onto the adhesive. I went in circles for a while, tried everything suggested everywhere. Kapton tape over areas of the digitizer frame, reseating and cleaning contacts, checking cable management for possible grounding. Nothing was working! Then, I tried working my way around with the ipad awake while I attempted to seal the digitizer… the phantom touches appeared on the left side as I pressed down, not near the digitizer ribbon cable, more in the center. Curious! One of the things I tried previously was to tighten any screws in the chassis I could find. However I neglected the small pairs of screws (PH000) that run...
Worth noting... (and Louis was right) My solution: Unplugged the touchpad, restarted, still had fan+kernel_task throttled. So started to suspect the sensor error was a red herring. Proceeded to unplug and restart each mainboard connection in turn. I did every one including the display... then I finally did the iSight connector (the silverish one next to the speaker/sub connector). PROBLEM WENT AWAY! (and hardware diagnostics report no problems). I should have suspected this sooner as there was a busted cable (due to busted display hinge), but didn't know which one it was. My brother's machine can now limp along happily for another several months with it's gaff tape hinge. ;-) So just be aware that hardware diagnostics may LIE lie to you about that palm rest sensor (or at least fib a little, ignoring the root problem).