I am setting a pattern for a sheep border/ plain weave tea towel.. have tied up for sinking shed. All the treadles work properly except for treadle ONE Treadle 1 has six tie ups and treadle 2 has 2….treadle one…one and two should stay up but two is sinking with the rest although not tied up. If you remove one tie up and only have five shafts tied up, two will stay up. Any suggestions

You could try increasing the tension of the spring for shaft 1 in the castle. Here's the AI instructions:

1. Remove the wooden storage tray/lid that sits on top of the castle.
2. Locate the Springs: Look directly inside the upper compartment on the left-hand side of the loom. You will see the row of metal tension springs hooked into Texsolv cord loops.
3. Shorten the Cords: To tighten a spring, unhook the Texsolv cord, advance it by one or two loops (shortening the overall cord length), and re-hook it. This increases the baseline pulling force on the corresponding shaft's cam.
4. Test the Resistance: Press the corresponding treadle. The shaft should sink easily but snap back up firmly without dragging adjacent shafts with it.