There's a great chance it could be electronic....Scarlett is a 97.....a slow 97 ........

 

only on a 97 it does this for some reason when the sun is out and the glare is directed at the ground the residual extrapolated magnetized particals retract and slow the forces of the lower wind velocity causing the mass to slow down in between the shifts more than normal -- jz

 

Have you been in "grandma's cough medicine?"