Sliding plate was held up by up ties . As we were assembling the unit you have to physically put the heavy part of the machine where plate lies up in the air. It’s says you need to people which is impossible. You need more than that as part weights 200 lbs plus . Also my head almost got crushed by plate that broke loose from zip tie . I highly recommend ties plate with more heavy duty ties or something won’t break . Or my arms or legs anything could’ve got crushed. Machine is great but assembly need to be safer and needs to explain better . Overall my rating is only low for the near accident this could’ve caused. I highly recommend to check this serious issue with plate out so other costumers who purchase this unit don’t get seriously hurt .