Correction on my group. Test 10, 7 failed.

For those keeping score, failed serial numbers from my group (Model 20 unless otherwise stated):
C0H5
C1SJ (Model 25)
C1ER
0418 (Model 25)
0205
C0ZN
C0DD

Good:
C0GZ
0327
0440

Have two more I might be able to check today.