Master Cylinder suggestions?

[A100man]

The m/c on My GT250 needed a revbuild.. I cleaned out the original parts but it went soft quickly..??

Anyhow I bought a (cheap) rebuild kit and now it won't bleed at all.. even at the top union..

So I figured bollocks to it i'll buy a new generic pattern unit or a something from a more recent bike that works (e.g. my XJ550 sports a GPZ600 m/c)

Suggestions welcome.
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Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

[WD Forte]

Have you tried sticking your thumb over the top union hole
and working the lever to get initial pressure and seat the seal?
( assuming proper assembly that is)

Check the return hole isn't blocked as well
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bikers smell of wee

[A100man]

[redeem ouzzer]

KTM Duke or Aprillia 125.
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Be a REAL MAN!

[A100man]

Just to tie this one up. I has reassembled some components in the wrong order, corrected it but still gave weak pressure. Bought a secong hand Nissin from of a recent CBR125 for a tenner, this now has nowfirmed things up.. suspect though I also need to remew all the copper washers.. again...
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Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

[Easy-X]

Just a thought but if you're swapping out the master don't forget to check the line for bulges and cracks while you're at it.
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[A100man]