I have that one, too. I removed the pin when I was moving, so it would not get bent, but cannot get the pin back in. I use it with a stubby screwdriver sitting in a bud vase instead of the pin.

I also made a thread stand out of a wooden paper towel holder. I drilled 5-6 holes in the base, pounded in dowels, put eyelet screws in the main post (where the paper towel roll would be.) The base is very wide, so it is stable.

Sometimes the thread "rocks" on the stand as it is pulled off the cone. If your holder stem sticks out above the cone, take the spool cap (the cap you put on last when you put a smaller spool on you machine spool pin)and place that cap on the pin, above the cone and see if that helps. It will hold the spool down and help the thread to come off the spool easier.

I've had to hold my thread between my fingers to get it to thread evenly...

What is thread netting

I've been told that you can also cut a section of pantyhose and put it over the cone like a thread sock.

Yes you do, I wasn't thinking straight. Sorry about that.

Cones have to unwind from the top so I sit mine behind the machine in the same area where the spool would go and thread it like normal. If your stand wobbles or tips, throw it out or glue a brick to it.

Mine was wobbly too, and then I screwed it to a block of wood (2x4). there is enough weight to hold it steady

I set my cones in a little dollar store tin bucket. Works like a charm!

I pass the thread around the original spool pin, so it's entering into the little bobbin thread tensioner from the same angle as it would if it were coming from a spool. I don't wind the thread around the pin, just use the pin as a guide. I place the cone older behind the machine, on the right-hand side (behind the main post, basically).

I don't know if that's necessary or makes a difference but I don't seem to have any trouble winding bobbins from my cones. I do have a good sturdy metal cone holder. I do this on my smaller modern machines and also on all my vintage machines. My 6600 has a built-in cone holder so I use that on that machine.

If the bobbin itself is warped or made wrong, that can cause problems. I've had that happen before, mostly with cheaply-made metal bobbins. Plastic bobbins can also be made wrong, or crack.