Every one I've seen, if not on even ground, one foot will tag ground, then the other, then apply a little tension. They won't tension up till both feet are on the ground. Not trying to insult by any means but have you experimented? If they don't do as mentioned above, that's a new one on me. Guess you'd have to compensate with legos / blocks. I hate those things due to speed and design. Always optioned out of them. Drill and manuals way more reliable and faster.
John and Rebecca Dickson
Emma-8 / Little John-5 / Iva-1+
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)