Noodler

Bending lofts stronger will reduce the bounce and increase the offset. Bending lofts weaker will increase the bounce and decrease the offset.

This is why I never build clubs this way. I used to, but long ago replaced this method with using a simple formula in a spreadsheet. That formula is accurate to within 0.25 point usually (as long as the build goes well, especially the amount of epoxy used is controlled correctly).

You couldn't be more wrong (and you had to post this 3 times?). Put those clubs on an MOI machine with the two different grips and you'll see that they'll barley measure any different. MOI machines measure the actual real scientific dynamic heft of the club. Anything going on with what you think you're feeling is all in your head. Sorry, but it's the truth.

As noted by @ARL67 , this can be achieved using AMT shafts along with MBI matching, but it is challenging. I have gotten close a few times. I have a set of Mizuno MP-H5 heads on AMT black matched at an MOI of 2675 and MBI of 64. The swingweight from the 4 iron to the PW goes from D4.0 to D5.0 (basically less than 0.25 point change from club to club in the progression). I also have a set of MP-15 heads on AMT S400 that goes from D2.75 to D3.75 But the absolute closest is a set of MP-25 heads on Ping AWT 2.0 shafts. From the 5 iron to PW, it's the 3 long irons at D4.00 and the 3 shorter irons at D4.25.

Changes in grip weight barely affect the total club MOI. The club MOI is what you really feel when swinging a club. It is the "dynamic heft" of a club. Swingweight, even though the word sounds like it should give you an idea of how a club will feel (heavy or light), does not actually provide a reliable measurement of feel. Swingweight is actually a balance measurement of the club about a fixed fulcrum 14" from the end of the club. MOI is the measurement of the inertia of the club and any weight placed at the grip end has very little impact on how "heavy" the club feels when swung. Hope this helps.

If you can find a set, the old UST Mamiya Recoil Proto 110 shafts were ascending, although not as much as current AMT and AWT steel options.

Another 3* from standard, easy on these heads. More than that is probably possible with a great deal of care, but you may end up with some slight hosel kinks.

This makes me sad. It's the kinda stuff I went through before I had had enough and decided to learn how to do my own club work. You've gotten some great advice already on how to handle this, but as noted previously, it's really hard to tell if there's actual damage to the tip. If all else fails, tip it all the way back and maybe make it a 3W or 5W shaft.

This is why ascending weight/mass shafts exist. Rather than having an abrupt "break" in your progression, the ascending weight gives you a smooth progression that works really well for many golfers.