Mine is a 2000 model and I haven't noticed any of the issues you're describing. The chute will clog occasionally in heavy wet grass or when a stick gets lodged somewhere. I love the shear pins on both the shaft and the blades. My deck doesn't have to be on level ground to get it to line up. I lift it anywhere in the yard and drop it back down. I've never seen it get misaligned. Maybe it's broke in after 1000 hours? It had over 900 when I bought it 3 or 4 years ago. Keeping the screen clean in the hopper helps keep the grass flowing. I checks that the shear screws on the blades are tight when I sharpen the blades.
I sure wish I could justify a new one, is yours relatively new?
Kevin
Edit: Actually I bought the mower in 2013 so I've had it six years. It's nice to be able to look back at old posts to supplement my failing memory