Just turn on the overclock and then cudaminer. You have to then, disable 2D in GPU Tweak. That is the process. I would like to find out why the scrypt is not being submitted or accepted. I would need someone who knows about programming and scrypt computations to find the issue, and possibly fix it. This would be a huge boost if we can get it working. It could all be for naught though.
There is no "issue" you can fix. Really not sure why you think you've discovered something at all. It would be exhausting for cbuchner to explain the many ways in which you are misguided (haven't you realized how little interest he's placing in your posts?).
You aren't validating a single share. You're like a mathematician claiming to have discovered a faster alternative way to perform a calculation, yet haven't demonstrated it yielding a correct answer.