Time to drop the physics and place your faith in the squat god. Only he/she can help you now. Reason has failed. Squat and pray. Butt seriously, I think if you feel comfortable in your technique, it should be pretty easy to test your real deadlift. Besides making sure you have a stiff, neutral back, it's probably the easiest lift technique-wise. Then again, I'm wondering when I'll next feel the urge to test my true 1RM. I'm pretty satisfied seeing gradual improvements in my 5RM, and it's a lot less taxing mentally. I think there's also something of a trade-off between the intensity of heavy singles, and the ability to do lighter quintuples more frequently. I dunno, I guess I'll just stick to the 6x10 plan and do singles whenever I'm in the mood. Anyway, you've established some kind of ratio, now it's a matter of what you make of them. I'm wondering if, as seems to be the case, now that my Cable Row and 1-DB Row are close to 1:1 with my Bench, if it really makes sense to hold back on the Bench until my Squat, Deadlift, and OH Press catch up. Maybe they never will. Maybe as I get stronger on the latter lifts, my Bench will continue to increase without much effort? The nice thing about those ratios, even if we don't follow them that strictly, is that they get us thinking about these sorts of things. At the very least, I'm pretty sure I'm doing the right thing by putting my weakest lifts, as judged by those ratios, first in the routine, and often adding extra sets to them.