Three reasons why I am not servicing it meself:
1) Space/tools - I don't have the space to have the bike safely in bits for an hour or two. Yes, I know St. Eptoe (and others I am sure) service bikes in extremely small spaces, but these people have the know-how and experience to ensure that if they come up against something unexpected, they have the tools/suppliers etc. to hand to sort it and the space to keep the bike safe until the solution is found. How many of you want to service the bike on the side of the road? Last time I had the tank off (as an example), the quick connector for the fuel line broke. It took me most of the day trying to get the replacement part sorted, during which time I had to put tank back on, move bike to out of way location, then move go through the whole thing again when I had the part... a royal PITA. (bear in mind the bike is my only means of transport).
2) Turks. I don't really relish having the locals come up to me every five mins and say to me "what the hell are you doing? are you mad? why don't you take it to the dealer?" The Turkish do not understand DIY in any form - anyone who undertakes DIY is either crazy or poor or both. OK, not a particularly good reason this one, but come out and try it one time!
3) Parts. Sourcing parts at reasonable prices can be a bit of a nightmare in Turkey. I'm after a full service - all fluids etc. etc. and am not sure what else will turn up. Brake pads (GOLD brand) for example, are 65Euros a pair (yes, 65 Euros!). Sourcing is as fraught with danger as choosing the right mechanic! It is quite possible to ask for the right stuff and be fobbed off with the wrong stuff or sold it at four, five times the correct price (being a foreigner, you may as well walk around with a neon sign saying "rip me off"). As an example, a mate went to the local dealer for a bolt, it wasn't in stock. " come back in 6-8 weeks please sir"... Another time, I went to three bike shops and two hardware stores looking to replace the tank bolt nut (I dropped the original one and it went down a drain -see point 1). Sale on return is not an option here either, so you should only buy what you know you're going to need.
You will find it difficult to imagine the horror stories I've heard and if I told you some of the schoolboy error stuff you can expect from most of the "professionals" here (in all industries), you would probably think I was making it up.
As this is the first major service the bike has had in my possession, I'm just trying to ensure it is done properly. I do not have the 1st hand experience to trust myself (I can do/have done most parts of a service, but not all), nor the on-hand support if things go wrong, nor do I have the tools, access to tools or space to do it myself.
Trade testing is not something I do by habit, but as mentioned previously things are different in Turkey!! If anyone wants to come out and give three of us a "how to service your 1150 or 1200 and then fix everything that is likely to go wrong on it" course, we'd be only too happy to receive you here in glorious Turkey!