--Before you put on blade guides like this you might consider
going over to roller guides. They work really nice on my funky ancient
Dayton cutoff saw; don't think I've had to replace but maybe one in a
couple of decades.

--
"Steamboat Ed" Haas : California: "The crap magnet
Hacking the Trailing Edge! : in America's crankcase".
http://www.nmpproducts.com/intro.htm
---Decks a-wash in a sea of words---