I have been doing some research, and many websites and opinions about the Prosoft inserts or sting stoppers just seem too good to be true. And it makes me wonder why doesn’t every golfer install them in their shafts. Are there any CONS to the inserts or similar vibration dampeners? and would you recommend them to golfers? I would imagine that the inserts may or may not make the FEEL of the shaft feel slightly stiffer. Or possibly throw the balance point off or maybe it would adjust the bend point of the shaft. Either way, your expertise, and opinion are needed, please. Thank you for your time, and sorry if there any inconveniences.