Ebike kit & Hollowtech 2 problem : the 64mm question

Hollowtech 2 cranksets don't have a gap to put a normal PAS sensor on (especially the 2 piece type for left side with a magnetic disc).
It's recommended to get a 2 piece PAS set for the right side (the chainring side).
Most common seems to be the Kingmeter 64 for 54mm chainring bolts, with KM74 adapter for 74mm chainring bolts.
But these tend to be small tooth chainrings, mostly on MTB.

Ebike kit in video : yose power
right-side Magnetic disc and PAS was bought via Yose Power on Ebay. £13.50
seems to be 'Kingmeter 64' plus KM74 adapter.

Join me as I mull over this problem and suggest a few solutions (I haven't tried).
In other words I am stuck.

update :
it seems the KM74 is meant to fit 5-bolt 74mm bcd cranksets.
Mine is the FC R3000 but the KM74 might fit the FC3030 CG (5 bolt design).
Hard to find though. Like £130.
The FC3030 wihtout CG is 4 bolt, so probably won't fit KM74.

PAS sensor magnetic disc seems to be :
Kingmeter 64 ... for 64mm 4-bolt cranksets.
(plus KM74 adapter for 74mm 5-bolt cranksets)

Crankset :
FC R3000 (110mm bcd, 2 speed 34t-50t)