Thanks to all who responded and a good reminder to change the hydraulic fluids.
I remember being a bit shocked to be charged around £350 by Williams for a first service on my Three Wheeler, with around 2000 miles showing, back in 2013, which actually only consisted of an engine oil and filter change and, they explained, a spanner check all round as there was so much vibration. Obviously, I swallowed hard and accepted it as I hadn't asked for an idea of cost first. Silly me, hence the question here.
