No problem:)

Sadly Western Greyhound have now abandoned West Cornwall, so some of the old inland routes have been scrapped. You can get a booklet of all the First services from the Tourist Info office or bus stations in St Ives and Penzance. I'd send you the one we had but we left it at the house we were staying at.

Zennor Quoit is not now the easiest to get to without a car, since the First drivers may be reluctant to drop you at the end of the driveway to the north (the 16B would be the service - you can only ask, some of the drivers are very helpful). You can walk there from Zennor village via the slopes of Zennor Hill, although it's a steeper climb - we tend to come back down that way and the granite rocks on top are well worth a visit on a nice day. You can also walk from Towednack (served by the 16B) via Lady Downs, happy to provide any directions if you would like them. If you haven't been, Chun Quoit is probably an easier visit, walking from Madron, or over the moors from St Just. Plus you get a splendid stone-built hillfort thrown in.