When using the 1/4" router, which collet are you using? The stock black oxide one? Or the tumbled tool steel one which matches the 1/8" precision collet?
For wrenches to use you may want to see:
When using the 1/4" router, which collet are you using? The stock black oxide one? Or the tumbled tool steel one which matches the 1/8" precision collet?
For wrenches to use you may want to see: