The best read on this subject that I have read to date:
by Larry R. Naylor
“I have received copies of Web discussions, involving whether grenadilla instruments can become blown-out, from customers and repair technicians from around the country. Since I have been restoring instruments in this condition for many years, I assumed that most musicians were familiar with this problem. Apparently, this is not the case. Identifying slowly accumulating problems with one’s instrument can be problematic because most experienced musicians can readily accommodate to, or compensate for, these changes—up to a point.
Some musicians are not as sensitive to idiosyncrasies in their instruments; they tend to “drive” an instrument rather than play it. I suspect that some musicians may have only experienced instruments in a relatively compromised condition, thus they do not perceive performance problems on their current instrument; they are unaware how good an instrument can be. For example, a comment I frequently hear from first time clients is, “I didn’t know my clarinet (oboe, English horn) could play like this!”