Originally posted by jr50hockey
The problem with the micromags, is that the on-off pins are typically shorter than a regular mag on-off pin. On a typical retro mag, you use between 4 - 6 ULT shims. That translates to .020" to .030" of adjustment. Some micromag spacing differences cause the ULT to already have that much equivalent length added to the assembly, which is why it probably was shipped to you with no ULT shims installed. Once you get the level 10 tuned, play with the ULT. All you can do is add shims until you get a runaway effect. Then remove the 1 or two shims that caused it.
The ULT shims are 0.005" thick. The level 10 shims are 0.010" thick. Don't get them mixed up.

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