Have fitted Eiback Pro- Line on all four corners of my 2.6 CDX. Had an excuse as the carfailed the MOT with a broken rear spring

Reading all the info I could find on here, I can see that with my 17" wheels, need to be around 8.8mm inwards at the top of the rim in relation to the bottom of the rim to give 1" 10' camber. This being the standardish setting as advised by WIM.
Reading other info here regarding a 30mm drop with lowering springs, the general consensus arrived at around 1" 25' to be an average between driving like a Sunday plodder and someone more at the limit to give the best tyre wear.
I worked out that 1mm equals 12.5 minutes. So, 8.8mm further in at the top gives 1"10'. I made a tool with a 17" pipe, to which I fitted a 10mm projection spacer at the very top of it and also taped a spirit level and an angle finder along it's length. The spacer is 10mm, which gives 10x12.5= 1' 25"!!

My question is though. To get 1'25" the top of the wheel was pulled as far as the adjustment on the lower shock would allow.
Am I doing something wrong?