Just so you know, you can quickly tell if a Homelite 25/30 series engine is a 30 by looking in the exhaust port. The 25cc engine has a bridge in the exhaust port, and the 30cc does not.

The Homey 30's were getting hard to find, but the newer Ryobi weedeaters I found have Homelite 30cc engines in them. The 30's work quite well.

AV8TOR