Happy New Year Steve! I believe the front ride height is adjusted by shims under the hubs / steering blocks or whatever you call them, mine had some funky carbon fibre ones on it when I got it although I can’t find them on the zen site now! I’d try eBay if there was no shims in the kit.
They sit between the chassis and the steering block.
Happy New Year Sorry meant to post earlier but John Phoned me virtually straight after I posted the question and told me about the shims. Items on order from Zen Racing, Thanks for replying though see you at the next meeting.