RockNRoller RLSH1 Laptop Shelf

I have a Rock'n'Roller R12 All Terrain with the RSH10 shelf. I use it for DJing and sound engineering. I was hoping the laptop shelf would be a handy place to put my MacBook, freeing up more space on the RSH10 shelf for decks or sound mixer, but unfortunately;

a) the laptop shelf leans, quite a lot. I'm worried about my laptop sliding off

b) it faces sideways to the trolley, so even if I did put my laptop on it it would lean left to right. Odd.

If it was straight it would be fine but currently I find it unusable for my purposes, so it just sits in my warehouse.

I know these trolleys are popular with film location sound guys, who use it as a portable workbench, so I wonder how they get on with it?

I score it high for quality as you would expect from RockNRoller. But for usability I think the company should have another look at this design.