I've used Siemens residential loadcenters off and on for a few years.
The last 3 houses I've done,the panels all had problems.
One had loose connections where the main bolted to the busses.
One had a main breaker that wouldn't go to either the off or on position.
One had a main breaker that had a "mushy" feeling when turned either on or off.
Any one else had trouble with Siemens recently?
Russell