Every T50 I've ever driven on whines when you downshift into first. In fact just about every older car I've driven does it too.

As far as I'm concerned rarely is there even a reason to actually downshift at all into first. And if you're coming into a stop, just put it into neutral or keep the clutch down. Then when you're ready to take off put it into gear.

Seems to me this is just one big non-issue.