I can't help you with your question... I can give you my thoughts and experiences though.

I swapped out the front springs for HyperPro's, new heavier oil and some different pre-load settings. The Hypro springs are also longer than the OE springs so the spacer comes out too. (its all in the kit and with full instructions)

In my opinion, the bike was transformed into a bike that tracks better, brakes better and doesn't wash out at the front on loose stuff as much. There is much less front end dive which means more stability in heavy breaking.

I was so impressed I replaced the rear spring with a HyperPro, there was a difference but not as marked as the front. Personally, I wouldn't run a Tenere on OE springs, but rather than replace the OE rear, I'd be more inclined to swap the entire spring/damper out - which I'll probably do in the near future anyway.

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Never underestimate the power of stupid people in large groups.