Hallelujah the foreign contaminant has been removed! It took several hours of hunting and trying different methods. I’m shocked it actually happened....I feel like I won the lottery.
Ultimately what lead to success was:
1) Taped the small pick up hose from my large oil
(hose I usually send down dipstick tubes) to an endoscope camera
and fed it down the gearbox
fill hole. This allowed me to remove the very small puddle of ATF that was remaining at the bottom. This was hiding the straw from view.
2) Taped my “grabber tool” alongside endoscope which not only allowed me to see where I was going with my grabber, but also provided better/stiffer structure to endoscope as opposed to a floppy camera
cable. This set up is invaluable!!!!!!
3) The foreign containment was initially spotted (just barely) via the gearbox
fill hole on port side. I couldn’t get a very good view or access from this angle.
4) Extraction was via the cover plate/tranny cooler area on starboard side. I was barely able to access a small portion of the straw with the grabber/endoscope combo tool. It was tense as I was worried it may come loose and/or be jostled to a worse location.
What a relief! Unfortunately I won’t be able to answer the question: “Will a polyethylene tube stuck in a a KBW20 gearbox cause damage?”
Thanks for everyone’s insight....very much appreciated.