Interesting video
Follow on from this, think hes getting the lever bug,
Half way through the vid i already knew the issues he would face with temp, and i actually commented on the vid, obs no reply, but then hes not one to take on board what people seem to say (remember him zeroing the filter burrs on the duo)
My comment
This is the down side to boiler spring levers, they are inconsistent, this is where the next gen of levers like the acs evo and nurri shine, dual boilers, heated group heads, you can get exactly out of what you want from it