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.

Any update on the throttle spring topic in the last 4 years?  Are the McFarlane springs still prone to breaking?  Any reason to not use the VANS helical springs?  I read one person is using both the McFarlane springs AND the VANS springs.  I'm installing my McFarlane Vernier throttle on a new 912ULS...

On my 2014 RV-12 ULS (with old-style non-vernier friction throttle cable) I recently switched to Van's helical springs after 10+ years of problem-free service from my McFarlane aftermarket springs.  I prefer the Van's helical springs. They work well and don't require the same high throttle friction settings required by my previous McFarlane springs.

Yes, many people have. Their springs are known to fail. Carry spares. Or just use Rotax cables.