I see. Is there any explanation for the speeds being slower at 1/1000 set to manual?
My Photographic Website | Valve Audio | Lonesome Valley Boys - Rockabilly Band | Building a 6x12 Wide Angle Panoramic camera
Probably time for a CLA. On the XD7 the mechanical speed (reported to be 1/100) was 12.5ms - I think the shutter just slowed down over age due to lubricants drying up.
The SRT's were off fare more after 30 years.