I received the HIWIN rails yesterday and briefly tested them before posting my thoughts on the product here. I will clean and re-lubricate them and compare them again to the clones I purchased from eBay. Also, there's no reason for me to "complain" to the Seller, because I have had bad experiences with trying to resolve issues with AliExpress sellers in the past. Hopefully those who purchased the Original HIWIN rails from Aliexpress can chime in about their experience with them also.
Update: After seeing other users having almost the same issues and with me still having the same issue after cleaning and re-lubricating, I decided to contact the Seller. I will update this post if and when the Seller resolves the issue.