Thanks BT, I was hoping you'd respond. I guess I'm still a bit paranoid about using the synthetic and failing. I've read up on the DAT-40 procedures...and you're right that I could easily pull it off. However, I'm just worried about them figuring it out. Especially since I did the at-home test on my first morning void today and it came up clean...I know you know I'm just freaking out a bit...but I already quit my other job now and I'd be up the creek with failure.

So, in your opinion you'd go with the synthetic QF5.7-1 over a partial clean/partial dilution?

Thanks again for all you do on here.