JusPassin:
"I think you're wrong Jinks. The portion he took off has no structural stress on it. Now if he'd have made the throat smaller I'd agree with you."
And I hope I'm wrong....I like Ken and moreover would never wish bow failure on anyone but "Riser Flex" is a real thing and getting tight glue joints through multi-layer curvy contours is a difficult thing and while you are correct in that reducing throat size would be eve riskier?...what he removed ain't all that far out of the woods (so to speak) and what he removed?...was definitely adding some structural strength to that area and now?...it's not.
Maybe Norm J. was just playing things to the super safe side as he sure had far more to lose concerning failures of his bows but I still think what I'm pointing out is why he only ever offered two grip angles...High and Medium...and "Low" was never on the menu for some reason which may have something to do with the Blacktail "Lifetime Riser Warrantee"
A couple excerpts from BT's website...
"Every riser incorporates an internal structural laminate buried within the back portion that not only acts as a stiffener but also prevents cracking around the throat area of the grip. This is an especially important design feature given the use of today's higher performing string materials."
and?...
"Grip Profile Options Grip configurations are available in either 'medium' or 'high' wrist profile specifications. See graphic animation below."
and if you go there and look at that Medium/High grip profile graphic?...you will see that no material is removed from the area that's been addressed on this riser in this thread...here's the link.
https://www.blacktailbows.com/bows.html
I'm not trying to be a butthead here but I do think fair warning is a great idea should folks decide to make a trend of this grip modification which seems a bit on the sketchy side to me...just being honest....not negative.