Does yours come and go like that? As for volume... its loud enough ticking that I thought a valve was hitting or something. It sounds really bad, but people assure me that some of the enfields are really noisy - noisier than mine! I'm still going to have the dealer look at it when I bring it in next.
BTW, mine does not tick after the engine is warm.. does yours? I only really notice it on cold mornings after starting.
As for oil, I've already changed it twice.