@greencat find a better option, i have a huge amount of spoke stock and masses of bearings
this is a pic from a couple of years ago, this has doubled at least since, headset bearings of pretty much every size, hub bearings in pretty much all the sizes, in 2 to 3 brands with different quality levels/prices, Maxx bearings for pivots etc. to say that shops don't stock this stuff is wrong, good shops stock this stuff, shops who don't have this sort of stuff tend to be the poor option.
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My lbs is run by a bloke I fell out with over his changing poor attitude and useless mechanical ability decades ago now.. he had a good , in fact brilliant saturday mechanic but lost him.. this shop owner used to lend me tools if he didn't have time to fix something for me..!
I got fed up with his increasingly crap attitude, and costs but mostly for my bike dissapearing for days and weeks for drivetrain basics, I was a loner, my bike was everything outside school, two weeks without it was unacceptable.
So I started a lifetimes habit in every aspect of my life, buy the tool, keep some spares , learn to be self reliant. Want to fix the bike right now, have a brew and go ride some more.. get on with it!
You appear to describe the sort of bikeshop I would of likely ended up working saturdays in , in my youth if things hadn't changed, and still using now.
I often look out shops on holiday, all over the uk, and buy spares etc if I like the person and tell them I like the shop etc.
Ghyllside cycles in Ambleside being the most immediate to spring to mind, my other half knows I will not be in the lakes without a stop here! very long established, passionate ex engineer career.. bike obsessed but rounded and welcoming, I am always in there for ages, chat, and buy things ive deliberately left purchasing to get when on holiday.. pedals, service parts, lubes etc.. ive been in there couple times a year for the last twenty years, and talking to them theres a lot of us, a useful part of the buisness, no bullshit, no moaning on cost or trying to bargain plea like lifes an auction.. they love customers like me. I don't do modern bikes, which they respect and they have dug about upstairs and helped me with spares before, because they are like me.
I think it was the start of my lbs pushing towards selling new bikes and accessories rather than being a well rounded owner who saw kids like me as loyal customers who would soon be earning some money for bigger and better things.. anyhow he used to have amazing stock like this.. for his speedy working saturday genius.
This is the stock of a proper mechanic / engineer who fixes things, and I think this model is not what brands want, they want salesman.
Hats off to you for being service and customer minded. I walk in modern places pushing shiny gravel shit to hipsters , and walk straight out, walk in see racks of chains, etc for all kinds, or retrobikes hanging up etc.. there are solid clues to it being a shop worth spending money in...!
I think a service led model that does not require the buy in, or dependance on brands is great.