Up until recently all my items that I have listed with manufacturer part numbers in item specifics are not showing in results, if they do only show in "more items related to" Items listed by US sellers the same way are clearly visible in the search results. As well when you search directly in my ebay shop / store they do not show up by manufacturer part numbers in item specifics. Even when searching manufacturer part numbers or any information provided in description when searching by "in titles & description" I have being on the phone for hours explaingin myself over and over again with no acknowledgement that there is a glitch and no eta on a resolution or fix. Frustrating paying for a feature that does not function.