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Hi, it looks really really good - the small "hiccups" is there because there is no load on the carriage.
Hiwin rails should be tested with a load on the carriage - only after installation. Hiwin rails are more accurate and you can feel it after installation with a load on the carriage. Unlike the cheap rails that can be really stuck right at the beginning or can have too much free movement (too much free movement is bad because then you can twist the carriage 0.5-1 mm) and you will see it on the printed object.
I noticed that you lubricated the rail - nice work :)