I got back to spinning today. I can't believe how much is still on the bobbins to be plied. I'm sure it would be less if I actually sat and spun once in a while!
I'm pretty sure I am overplying, but I am hoping it comes out a bit when I wash and set it. I've heard that under spinning causes the yarn to be weak. I guess we'll see what happens when I am done.
This is what is left on the bobbins to be plied. I tried spinning the singles by weighing the roving and making it equal amounts. But one bobbin still looks like it has more than the other to me.