1) Did you get the stock length? Yes

2) Did you adjust for weight? No. But I do when riding two up.

3) Do you notice an improvement on "tracking" in corners? (If you know what I mean?) Major improvement. Key Progressive 440 phrase, "Inertia Active System"

Progressive makes the standard length shock in a heavy duty version. At your weight class I suggest the heavy duty version. They don't list it on their site, so call them.

Blowing gravel off rural roads