It has
@charley 
For whatever reason, the machine worked fine when I tested it at the previous owners home. Today has been a different story. First there was the dust and fluff. All sorted now. That included taking the hook and bobbin case to bits aswell as the top thread tensioner. Before I got to the thread tensioner, things weren't looking good. Stitches were skipping, the needle was jamming, thread was bunching up under the fabric and getting stuck in the bobbin case. It was a mess.
Someone had (as I later discovered) assembled it all wrong. I've also taken some strain tension out of the motors drive belt. That was under insane tension.
She's now working perfectly. Stitches are lovely

although I think the foot pressure may need tweaking slightly...some rippling on the bottom of the fabric.
I'm very pleased

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