The modified dolly runs very smoothly on the alloy ladder section. Fitness weights have been used to balance the jib arm. A problem arises with the PU skateboard wheels, which create flat spots when left in one position for any length of time. These will be changed for metal scooter wheels without the PU tyres. The jib rotation is via a 125-tooth gear. The load seems high, and it remains to be seen whether the alloy gear is up to the job. If not it will have to be changed for a belt drive.