Mate, your SS is just a big BMX bike, your local shops WILL be able to put it together ... and unstuff any stuffups you make. While it's true a lot of shops have jerks manning them, you'll also find that a lot do not and age and gender is no indicator (there are a lot of fixie riders less than 20 and a lot of BMX riders who also ride something bigger and gals who know and do more than most of us on this forum).

As a grumpy old bastard who is viewed by most roadie bike shops as some form of interesting heretic, even with my road bikes, I've found that if you approach people politely and give them a chance, the good ones come to the fore very quickly and it's often amazing where you'll gain understanding and support when you take this approach. Of course, genuine cycling enthusiasts are always interested in something different and as a fixie rider, you're definitely going to provide some variety to their day.

Of course, I'm bizarre enough to develop good relationships with my local bike shops rather than just automatically go to the internet. My lbs has done work for little or no charge, simply because I bought the parts from them and buy lots of other stuff from them. They remain an endless source of advice and counseling, even though they are a roadie shop and I definitely am nothing like that. But I've taken the trouble to talk to my shops, to get to know them and to give them some reason to smile when I come in, even if it's just a nice chat or to ask about something weird they don't get to address very often.

The price to get your lbs to put your bike together? Well, you can hand over some cash and ride away utterly clueless and, because you haven't learned anything about your bike, you'll probably **** something simple up OR, you can invest some time and money into the exercise, learn ****loads, gain a friend or three and actually enjoy your cycling because over time, you'll learn lots about how your bike works.

Incidentally, this is a general sort of post, not simply having a go at you.