I believe Willys is correct, but has chosen the wrong words.
The balancer lever has no impact on the timing of the balancer system, of course. That is, no effect on the phasing of the relationship of the counter weights to the piston at top dead center.
There is, if I recall correctly, a difference in clocking of the shaft slot to the arced slot between the EM doo and the Kawi doo. The EM doo has the arced slot clocked a fair amount counter clockwise as compared to the Kawi doo.
My belief is that the theory behind this is that the Kawi doo will run out of adjustment after a while, thus the EM doo has the clocking change to allow for a longer period of adjustment. That's just my opinion of the theory; the truth may be that it was easier to machine that way.
Some see that as a benefit; I see it as a false benefit. I would suspect that Kawi, when they designed the OEM part, figured that when the adjustment lever ran out of travel that it was time to refresh the balancer system parts. Were one to use up all of the EM doo's adjustment, the chain in that system would be worn well beyond its practical service limit.
In that event, of course, the timing of the balancer system would have changed.
And, I have never heard of a Kawi doo running out of adjustment range. Spring yes, doo no.