Scott McClay 200 Metric auto 1/2
 

I have a Scott McClay 200 Metric with auto 1/2 shift.
Does anyone know how to keep it shifting at a constant RPM.

It will change with trans temp. high temp=lower shifting some times, not shifting at all?

I know it's a fluid pressure driven system, and that what causes the change.
But what I am asking is if anyone has a remedy for the issue.
Thanks!