I had an issue with an adapter plate I purchased. That is not why I write this. The wrong attitude here could have soured everything. What I found was customer service far beyond my expectations. They acknowledged the mistake, and confirmed the slight length difference keeping my sight off the plate. Amazingly they contacted one of their suppliers who was working on this issue, and came up with a potential workaround with just some shorter screws. Hope it works.
Great job folks,
VRG