Does anybody have a functioning 17" mbp with a 6Gb/s SSD drive?

Question

I ordered a MacBookPro 17" (June 2011) with the 7200rpm hard drive which is a slow drive, but comes at no extra cost with the machine.
The ssd's Apple ships with the mbp's are relatively slow and expensive, so I do not consider them an option. I therefore ordered an OWC Mercury Pro 6G (240GB) sata3 SSD drive and replaced the hard drive with it. Under both Snow Leopard and Lion I get beach balls almost continuously. Installing the ssd in a co-workers 15" mbp makes the drives work at over 500 mb/s, so the drive is not the problem.
I explained this to the people at AppleCare's helpdesk and they state, since I used a non Apple item, they can't help me. They tell me to go to a local reseller and have them install the ssd for me. This way the mbp is still valid for AppleCare. The local reseller won't touch my mbp since I bought it online at Apple (and not at his store), plus I did not buy the OWC drive in his store. In short, AppleCare is useless here. They claim I should've ordered one of the Apple ssd's (which are basically sata2 drives).
Since the 17" mbp supports sata3 and has the fastest processors of the mbp range (which is why I bought it in the first place) I do not understand why Apple would force me to 'downgrade' to a non current ssd. I work with large 3D drawing files as well as multilayered large photoshop files, so having a fast drive is very beneficial to my workflow. The hardware in the 13" and 15" mbp's support the functionality of a 6G ssd in practice, whereas the 17" mbp only does that on paper. Selling my 17" and swapping it for a 15" model seems the only option but I refuse to believe a company that claims to be technologically advanced can ignore having specifications that only work on paper. There is no record, comment or even gossip of Apple indicating this is a problem, let alone they are working on a fix, despite finding numerous forums online where people have the same problem I have.
So for the record, on the official Apple Support site, directed to both Apple developers and users:
Is there anybody that has a functioning 17" MBP with a 6Gb/s SSD?
If you have, please let me know the specs or your machine and drive so I can see if there is a solution to unleash the full potential of my MBP.
I believe there is no sadder sight than the sullen tread of a caged (osx) Lion. Help me free the desert's fallen king!! ;-)

Answer 1

Thanks wjosten for your reply. I filled out a feedback form.
To comment on AussieDJ's post: I tried the OWC shielding kit, doesn't work. The problems described with 6Gb/s ssd's were all with pre March MBP's. Mine is a June 2011 MBP so I figured the problem would've been solved in the mean time. I guessed wrong there. Since I waited for the release of OSX Lion (and the trim support functionality) I thought this would solve the spinning beach ball issue. I guessed wrong there as well. Can't return the ssd anymore (>30 days) so I glued the ssd on our offices "wall of shame". Being an architecture office we have everybody in the office put up poorly designed objects here (sort of a cool and uncool board but then labelled ***? and No way!). I should've glued y 17" MBP on this wall actually (since it's hardware does not work with the 6Gb/s ssd), but the bugger is too heavy and won't stick... ;-)
The worst part of the story is that my dad got his 6Gb/s ssd to wortk in his windows notebook...and he does not skip an opportunity to rub it in (your MBP can't do no 6G)!
Let's hope there will be an EFI update!