Apple II Disk Drive Alignment...

[lfessen106@aol.com (LFessen106)]

Would someone knowledgeable please share with me their proceedure for Disk
drive adjustment?
  I have both the Disk II drives and the Unidisk drives, and I currently have
one of each that is failing to read (well, one writes disks that only it can
read).  I am not entirely certain that the alignment is off although it may be,
they are all very clean, and I am pretty sure that their speed may be slow (at
least according to copy II+).
  Basically I need instructions on ramping up the speed on both types of
drives, and then info on any way to tell alignment probs/common hardware probs.
 Thanks in advance for your help.

-Linc.