My 750WR from Germany had 25kW in papers;)
Washers and reducers were inscribed. Washers have not been found and this is probably
why this motorcycle was real estate at the time of purchase.
But the reducers were very restrictive (38mm carburetors).
I forgot about the rocker arm. You're right.
Two more teeth in the front is actually six less in the rear.
As for the sprocket cover - I have a 1052 cover in 1157.
This critical bolt is not compatible with the crankcase.