Dial gauge timing as per Mark in Sc

Well it was a nice and sunny day here in Switzerland, I received my parcel from HVC, so… time to try and cure my 400D ills!

1) the HVC/Motion pro dial gauge and adapter is too long…can’t use it on a 400… you can’t fit the gauge in the adapter in situ, hits the top frame tube… chop about 1cm off, drill tap new stop bolt hole… ready to roll. 
This kit would work perfect on a motor out of frame… just not plug and play on that (?) bike.

My question is: in Mark’s excellent guide (under my tools in pic ) it says turn motor in the direction of running, which is counter clockwise (CCW) untill you reach TDC… easy enough and then says to keep turning CCW untill you see the reading you’re looking for (2.3 for me). Seems to me that if you proceed like that you will end setting your timing to 2.3 AFTER TDC and not before? I set my TDC and then went backwards (CW) 2.3mm (or a bit more and then forward to it, to take up play) and set my timing there… 
Am I totally backwards thinking? or just not getting it? 
EDIT: No you aren’t… most people find TDC and then back quite a way and THEN come back to get proper reading.

Bike seems happier now (just did the LH Cyl which was defo not OK)