I still haven't got the Landis 12 I bought a couple of months ago to work yet.
I'm quite mechanically minded(

) but I'm having a few problems sussing the machine out.
I've cleaned and oiled it thoroughly, even cleaning the elements and refitting them.
However one thing I've noticed is that the machine has a serious 'tight spot' when it turns over, - like you need all your strength to turn the hand wheel over past the 'jam', and the machine IS hot.
So today I removed the main drive belt to isolate the problem and it was still tight, indicating that the problem was in the head.
After further investigation, I removed the bobbin, and bobbin case and found the machine fairly whizzs round. So, looking closer I've deduced that there's too much sideways play (???) in the shuttle driver (L25-3) that drives the bobbin case, and this is causing the bobbin case to bind somehow. Or is my shuttle not setup right in the race?
Does anyone have any suggestions, or is this a likely/common problem? Are the machines usually hard to turn over?
Also, should I be able to lift the presser foot when ever I want too, - not just when the awl is about to come through the leather?
And lastly, the bottom thread keeps breaking about where it goes around the Take up arm, what's the most likely cause for this, too much tension? Because it's been so hard to turn over (and hot) I'm finding it slow going.
More power to y'awl.
T.