my bet is that the 'peak' is very device specific,
and is principally related to viscosity and its effect on 'h'
I am not overly fond of the 'sweet spot' notion,
but can think of no other simple explanation
this premise could be easily (lol) verified
got any other 'high end' wbs pHaestus ?
EDIT: caution
need to mount with the same hardware to preclude clamping force differences
- I could send you the old 'high deck' version of the MCW5000
(note that the present one uses stronger springs in addition to the dropped deck)
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