Bro, Singapore is a sad place to be looking for such services- I’ve not come across any that does these well. Even simple guitar set ups are better done yourself, as some of the dealers who claim they know what to do actually are ignorant fools. Eg: I’ve seen a guitar set up by one of the dealers here but the intonation are all OFF/ simply forgotten… **sheesh**
If you can spare the cash, look for individual luthiers to have such rectifications done.
i can do simple setup, rewirings etc...but stuffs like nut-filing, refretting etc gotta be left to some experienced luthiers. the guy at sinamex´s guitar hospital seems pretty good, what do you think subversion?
Malcolm is now based in China and is back in town every couple of months by the look of it. I´d try and contact him by posting on the GAS station forum and you might be lucky enough to catch up with him when he´s in town next time. Seems he´s always willing to do work then.