Thank you Adrian123!
Your post was invaluable in getting my FS-1030D working correctly again.
One extra thing to watch out for, for future reference.
I used these instructions once to get my printer working, but then about a year later the paper alignment started failing again. This time it was usually only the first page of a print job (and occasionally the second) that was affected by the problem.
I took the printer apart a second time using these instructions, expecting some of my pad repairs to have come undone, but all the original pad repairs seemed to still be ok. I had covered the original pads with electrical insulation tape (the good stuff, not the cheap stuff) wrapped twice tightly right around the pad and the metal actuator, and none of those seemed to have come undone, or was sticky again.
Then I found that one of the solenoids (the second down from the top) had a second smaller, thinner pad farther down it's actuator, that I had not noticed before, and that pad had become just a little bit sticky. Covering that pad with electrical insulation tape too, just like the others, has worked a treat. The printer is working properly again now, and hopefully will stay that way.