I am losing my mind gents and ladies. 
I posted the below specs about 2 weeks ago...since then I have replaced the risers and updated the bios got shorter extension cords...But still these 2 rigs crash about every 6 hours. 

Any Ideas at all?  I have 4 other rigs that are running flawlessly with the same hardware, but all identical cards.  These 2 rigs have mixed cards.


Both rigs use the following hardware:

GIGABYTE GA-Z270P-D3 LGA1151

Intel BX80662G4400 Pentium Processor G4400 3.3 GHz

Ballistix Sport LT 4GB Single DDR4 2400 MT/s (PC4-19200)

Lexar JumpDrive S75 64GB USB 3.0 Flash Drive

VICTONY GPU Riser Adapter

EVGA SuperNOVA 850 G2, 80+ GOLD 850W

Also 5 intake fans per rig on  open air cases.

Rig #1 uses the following cards:
4 x Gigabyte AORUS XTREME GeForce GTX 1060 6GB
2 x Gigabyte GeForce GTX 1060 Windforce OC 6GB

INFO: Detected new work: 3bbc
INFO: Detected new work: 3bbd
Temp: GPU0: 65C GPU1: 65C GPU2: 74C GPU3: 58C GPU4: 65C GPU5: 67C
GPU0: 170 Sol/s GPU1: 313 Sol/s GPU2: 299 Sol/s GPU3: 312 Sol/s GPU4: 310 Sol/s
GPU5: 309 Sol/s
Total speed: 1713 Sol/s



Rig # 2 uses these cards

4 x Gigabyte GeForce GTX 1070 Mini ITX OC 8GB
2 x EVGA GeForce GTX 1060 SC GAMING, ACX 2.0 (Single Fan), 6GB

INFO 02:52:54: GPU3 Accepted share 123ms [A:14, R:1]
Temp: GPU0: 74C GPU1: 70C GPU2: 70C GPU3: 69C GPU4: 76C
GPU0: 423 Sol/s GPU1: 431 Sol/s GPU2: 304 Sol/s GPU3: 303 Sol/s GPU4: 428 Sol/s
Total speed: 1889 Sol/s

Both are running on ewbf-0.3.4b mining zclassic
with these options:

   --server us-east.zclassic.miningpoolhub.com --port 20575 --user dirtydeeds.$rigName --pass x

Not overclocked and still crashing after a few hours or less.  I am feeding 90volts to the 1060s and 100volts to the 1070s.

No more than 2 risers per sata cable.

PLEASE HELP!

Any suggestions?