Hi,
before any Alignement tricks be sure to :
- Have kicked out all the old grease
- Have sprayed electro contact cleaner in the motors
- Have putted oil in the 2 motors
Which kind of A1000 drive to you have ? Epson or Mitsumi (the one with the metalic rubbon for head displacement ) ?
Depending of what is inside or it was replaced and modified, it will be possible or impossible to swap the drive.