Sounds like you could have done with a metal blade for that verge.
You had me confused when you wrote 4st until I read on and realised you meant four stroke not four string lol.
Never knew Ryobi released one.
The Ryan era Ryobis are all about low end torque too.
The higher end power of the Mitsubishi FC 2st on mine really comes into it's own for string trimmer duties. Absolutely love it's performance, but there are or were probably just as impressive devoted line trimmers at much less cost, e.g.: Ryobi full crank 2 strokes you talked about a while back.
Speaking of Ryan era Ryobis, the early green ones seem to sound better and more vital than the later models with white or grey fairings, especially the easy pull series with the notch cut into the cylinder lining-ugh!
