McFarlane Throttle springs

I realize that the correspondence is 5 years old and I'm not sure if the McFarlane carburetor springs issue is settled.

I own a Tecnam P92 Echo Clasic Deluxe with Rotax 912 ULS engine and a Tecnam made friction mechanizm. The mechanizm is pretty inefficient in keeping the throttle fixed and we already replaced it once.

We consider replacing the carb springs with McFarlane softer 6822 and 7235 springs, however would like to have Rotax confirmation to their compatibility.

I would love to have Rotax formal reference to the issue, and any other references.