Also if you take out the time and money, take into consideration the research involved on this forum, some things are hard to find, basic information that you think would be posted ie: tube stipe position was not on the forum when I made the mistake of applying mine too low, I learned the hard way but then posted the correct measurement as a how too. How many other measurements are hard too find? then you can understand the frustration some would consider not worth the extra work when applying to a higher level. Even TD distance to end caps posted in the CRL was mentioned in a build today that I posted, it was then commented as not screen accurate, there has to be a base line for those to follow and if it gets too hard some will just give up, you can't have CRL measurements in black and white then get told follow screen shots?. Sure it would be great to see more TK's at the higher level but without the support, posted information and encouragement then why should they really bother if they get their basic approval. Hope that has helped a perspective from just one who has taken the path