I promised to get back to you after using Lock’n’level. Well, I have got to say, its brilliant. There is no better option in my opinion for levelling a twin axle. And to be honest, if I was levelling a single, I would also buy it! I used it for the first time over Easter, and within minutes, I had both locks fitted to my new van! I used a Screwfix pump that was around £20.00 that was quicker than the video! I am really pleased and would happily recommend.
Many thanks and the best of luck with the business, I wish I had thought of it! It should be in every caravan shop without doubt! The days of chocks to level are gone!
JH, Swansea