Regarding the warning on Thompson's website, Randy bores his handles to close, but correct tolerances. (They are bored .015 over the nominal size, or approximately 1/64” oversize.) Since I consider both Randy and Doug to be friends, I'll just leave it at that.
I don't know where this information came from but I assume you got a PM from Monster tool, now I have a right to say my 2 cents but I'll say it in public.
I measured the bore on Monster tool handles here at the house.
3/8 dia(.375) 1/2 dia(.500) 5/8dia(.625)
.378 +.003 .501 +.001 .628 +.003
.380 +.005 .503 +.003 .629 +.004
Dave Peebles handles have a larger bore and no problems at all.
.405 +.030 .521 +.021 .640 +.015
Randy and I do talk, he was even in my booth for the national symposium. You can see from the numbers above they are not .015 oversize or "correct tolerances". I've been replacing tools that didn't fit his handle but when it blew up over a month ago on another site I quit, that is when Randy found the money to buy oversize reamers... this is a new standard that started maybe a month ago.
Regarding the warning on my website there are to many handle manufactures to put up with this, I'm not going to waste my time fighting over size nor am I going to replace every tool that doesn't fit in this handle. I also don't believe in restocking fees plus you lose your shipping costs too... no one else has this fee.
I've talked to Randy and Jason about the problem, IMO this could/should have been resolved before it got out of hand.