Hi, I have a Scott Bonnar 590 rear catcher reel mower which I have owned for about 2 months. One thing I am confused with is the difference between the SB 430 and 590 clutch. Is the clutch the same? Is there a chance that the rear roller gear may break after a while? I noticed that before I used the mower to mow my lawn yesterday, the rear roller could move both fowards and backwards, but now cannot roll backwards. Any help appreciated. Also is the front roller height adjustment knob and bracket available?, as I need one and cannot find it anywhere. Thanks Jonathan.
