Another resource is the TFSR manual. Look in the sticky notes under resources or google Tools For Self Reliance and look for the sewing machine info. It should have info for the 201 and various other machines including the 66. IMHO you just didn't have the spring set right. Unless someone has sprung it, likely it is in ok shape. They are available and cheap if you do need to replace it. Some times I take a piece of aluminum foil, roll it up and use it to rub off any dried oil or rust accumulated on the spring a little. Remember to clean the center pin. Rubbing alcohol or naphtha will clean it but will also change the shellac on the machine. Search through Rain Noe's blog for a lot of info about the 201. I would not want a 201 as my first machine to repair. That 66 is much simpler.