Hi All, This is my first post. I am a senior mechanical engineering student looking for some help on my senior design project, any help is greatly appreciated! We purchased these 12V DC window motors (https://www.parallax.com/product/28962) for the purpose of motorizing a stander (similar to a wheel chair, with the exception that the patient is placed in an upright standing position). The specifications and data for the motors is very limited as you may find on the website, but Parallax does provide a current draw value at no load of 1.5 A. The issue: through our bench testing, we have found that one motor will draw 1.5 A under no load, and the other will draw 2.5 A. The question: Our professor believes a difference in 1A of draw current under no load is 'normal' production variation for DC motors. Is this a reasonable assumption or should we contact Parallax and ask for a replacement? Thank you!