Like my $3000.00 dollar Husqvarna Residental mower has.
I have the replacement cross brace and the clutch cover which is basically another brace as much as a clutch debris cover. With both of those in place, the SD is so rigid it lifts the front tires fairly often when in transitions that have dips or drop offs to a flat surface that aren't in the same plane. I didn't think I liked the slight flex before. However, I can see the flex was a good thing up to a point.
Color my SD "Stiff"