MCK didn't really have anything different than I've used before, but today I went to Vancouver Bolt to see what they had in stock, found out that Simonds Intl makes a chain saw file that is 3/8"!! Bad news is they can only be ordered by the dozen
, good news is they're less than $3 each
, so I ordered a box. Hopefully they'll be .375" or just slightly smaller.
It's on page 5 of their catalog.
Simonds also makes a file called a Gullet Special (page 6) that's a straight 3/8", those they had in stock are .360"-.365", so with a little touch up with a wrap of wet/dry sandpaper, as near as perfect cut could be made.
If these work out good, I'll be glad to share them for cost plus shipping just as I did on the stock bolts. You can also find a local Simonds dealer, they have a contact page if you want to try and order one locally.
There's also one online source, the chainsaw file is $390 a dozen though, real proud of them, aren't they!!
http://www.utsupply.com/viewprodtable.asp?CategoryIDSS=1595Tim
http://www.simondsint.com/publications/filecatalog.pdfhttp://www.simondsint.com/company/email.php