Jeff

Hi Robb, Plum brake arms do tend to run a bit wide. The 90mm measuring closer to 100mm is not surprising. They should retract somewhat when in the locked position. But you can round down when selecting brake width on these.

Hi Ben, You could try the Scarpa F1 powerstrap found on this page: https://skimo.co/scarpa-buckles-straps This is a very simple Velcro power strap with a narrower width. Note that removing the factory strap will reduce performance, since it is a booster-style strap.

Hi Melissa, For that ski, the universal kit is the best bet. The other two options work well for wider or narrower skis.

Hi Kyle, They are the same. It is a cross-compatible item.

Hi Stanley, They are not compatible. These boots have a touring sole (ISO 9523), and the Look binding does not have the proper toe adjustment to accommodate this sole.