I need your help again /bqg/
Greentext to keep long story short:
>bike old, wasn't serviced for over 5 years, experiences breakdowns far too often
>get it fixed by a serviceman. Replaced: cassette, chain, and couple things unrelated to drivetrain (tubes and tires)
>since then links get stiff at a very very fast rate - you can get 1-3 stiff links during a 30 min ride (this is not an exaggerration)
>ever-present "jumps" that accompany stiff links suck all the pleasure from riding
>getting rid of stiffness is easy, re-lubricating is easy, none however fix the underlying issue and links keep getting stuck, stiff and whole drivetrain keeps jumping
>been to the serviceman twice since, he only fixed the stiff links, outright refused to fix the underlying cause
>fed up, gave up on him, ask /bgq/ for advice
>following your advice end up replacing entire crankset and chain
>only parts of drivetrain left from before the servicing are deraileurs
>only part of drivetrain left from the servicing (the evil one, the one that broke the bike) is cassette
>issue still persists
Spring is on the way and I'd like to be able to get back to riding again.
How do I get it fixed?
I've just been to LBS. They pointed out a mass of other issues with bike I don't want fixed - cashgrab bastards.
All I want is the drivetrain issue causing link stiffness to be fixed.
Personally I only have one idea - the chain length, since both new chains are same length and both cause stiffness (old one didn't, but I don't have it anymore to check length).
But even here I used Sheldon Brown's guide for getting proper chain length, I seriously doubt I did it incorrectly.
Is it possible the guide is old or wrong through other means? How do I get correct chain length?