I don’t think you need be so apologetic. I am having exactly the same problem using a professional Beta SP deck.It captures with dropped frames inserting a “No Video Input Blackmagic Design” screen, again most of them happen when the camera was physically moving.It has nothing to do with lost sync or low video levels as i watched my source tapes on a vectorscope when i RENTED an alternative edit suite to do my editing (This suite had no problems capturing the footage). Fix the problem don’t change it!
My solution to the Declink problem is a cheap dv card with an S-Video input & no Audio, Crashing, Dropped Frame, Reinstall every time i reboot, Losing all my clients setbacks.
You are no bonehead, unless like me you have used your head against the wall to try and forget the money and time you have lost.