Blackstone is not worth much in most peoples minds. Terry Dyson is probably the best out there in my opinion. His analysis counts the largest as well as the microscopic particles. Plus, he not only gives you the numbers but a very detailed analysis several pages long on what the results indicate. You need to provide him with information too. It is like a doctor - you have to talk to your patients to get the full story before you can make the best evaluation. Lab values alone cannot give you the best information. Often Dyson will give an audio account as well. It is proprietary and not shown to the general public. If you were to experience these things you would understand the proprietary nature of his revealing work.
I do cut my filters apart when indicated, it is part of the fun. I have appropriate tools for exactly that task. In fact there are very few tools I do not have. I am a tool person. But go ahead and make incorrect assumptions about me since it gives you pleasure. Instead of making conclusions about people you might ask about them instead, very revealing in almost cases.
Often it is best to ask a question rather than make a statement, very hard to do for some people, impossible for others, sad.
PS: I concur that break in takes up to 20,000 miles, something revealed in UOA. Most people think it is much shorter than this.