Can you post a picture of your engine stand? I have several different brands that I use all the time,both triangle style (3 legged T style) with three wheels that bolt together and one welded up one
I wouldn't buy or use a Harbor Freight take apart under any conditions
I've had both complete iron and aluminum block with iron and alumimunm heads with 10:71 blowers on my stands
The heavier the engine weight the harder they are to push or pull around and harder to make them go where you want them to go when fully loaded with the engine ready to put in the cars
I have one H.D. take apart Snap One four wheel one H style, it has rubber wheels on it so it hasn't been used in many years