Region: East Yorkshire
just as an aside; if you're changing you're chains and looking to save money take 'em down to your local bearing and chain suppliers, they'll size them up and cut them to length, new split pins. Check it's a good quality chain, Regina et-al. Should be a lot cheaper than anything with the name Maserati attached to it. I got my Ghibli chains this way, it took about ten minutes and cost about £60 as I recall.
Do you have a Merak shop manual? it should give info on resetting you cam timing.