15'' MBP + M4 SSD + Kernel Panics + Data Doubler = dead end

Question

Hey there,
I've been dealing with an issue since the snow leopard days, and it got worse sometime in Mountain Lion. 2.66 GHz i7 w/ 8GB DDR.
A brief history: In January 2013 I replaced the main HD on my MBP with a 500GB Crucial M4 SSD. I simultaneously upgraded to 8GB of Crucial DDRAM.
For a year or so everything ran at blazing speeds: I use Ableton Live for music production and use many plug-ins along with it, so CPU load has been pushed more than once, never to any place that was immediately fatal. Slowly, with increasing frequency, I began to experience unpredictable kernel panics. Once a month at first, then twice, then once a week, etc. Usually they would happen while doing something low-CPU such as browsing the internet with few or no apps open besides my browser. By September 2014, I t was happening multiple times per day. A colleague suggested moving my SSD to a data doubler and putting the original HD back in the place it started.
Trusting this colleague and some light reading, I ordered an OWC data doubler and installed it. Per "about this mac -> system report," the doubler is properly installed: under "SATA/SATA Express" there are two "Intel 5 Series Chipset" drop downs (see pics). I've tried several HDs and the SSD in the doubler to no avail, and all the same hard drives do show up in the original SATA port (pics demonstrate). In no case can I find the doubler's drive in Disk Utility or in Recovery mode. The most interesting next step I have heard is to open the BIOS (i.e. firmware, right?) and tell my laptop to look for the SSD in the second SATA port. Any ideas?
Other mentionables:
-The kernel panics only occur with the SSD in the main HD port, even after formatting. Booting from Original HD or external HD do not experience these issues
-The SSD is SATA III and both my laptop's connections are SATA II; I don't think that's an issue as the M4 can operate at 3gb / s and does so in the main HD bay
-I haven't done any RAM-isolating trouble shooting, though as mentioned the kernel panics only happen with the SSD in the main HD bay
Thank you so much for any energy you put into my issue.
All the best,
Kevin

Answer 1

As (bad) luck would have it, I don't have the discs that came with the machine .  Isn't that always the way?
At any rate, I figured that would be a suggestion and searched the web for looking to see if what I need (AHT) could possibly be downloaded.  Looks like some folks have found a way/location to download AHT from the web from some of the posts I've seen, but I've come up empty handed.