What I decided to do a while back is... try things (out for myself).
So, I have a couple of outbuildings on my property. I invested in the appropriate woodworking machinery, so I can try these things for myself.
Some may say "I don't have the space, or I don't have the time". It all depends on one's abilities and one's priorities..
If one has 2/3rds of these requirements... go for it!
As far as ct0517's remark from his TT's manufacturer.. well, I did not find any relevance.
For instance, I have a couple of VPI's center weights. I'm going to machine in some threaded holes to accept differing materials. I have some carbon fiber, some Ebony Gaboon, etc..
Upon listening to these without the benefit of a mechanically bond, there is a real difference. Though, it is apparent that an appropriate mechanical bond will give me the exact means of what I'm hearing vs. the exchange of material. There is NO other way of proving this than for ones' self.