Thanks for the compliment GM and glad you like it.
The next time you're on the net Google this; "Uncle Nicks Powder Baffle" and you will find a PDF doc that has templates you can use to make the baffles and you'll find that the .01 gr variance will virtually disappear. I use aluminum roof flashing pieces (.49 ea.) from Lowe's but I guess a flattened beer can would suffice also. The Little Dandy takes the 1 & 5/16" size so use that template. The aluminum can be cut with ordinary scissors so nothing special is required.
Thanks again for the good words and holler if there are any questions or issues.