Rizzoa,
Your post's downloads didn't work for me (empty). Please explain about attaching a piece of wood to the plate.
BTW: I have used bits with larger diameters than the base plate's opening, being sure not to let the plunge springs retract the bit, but it was an unnerving procedure. I've also used an shaft extension. That is also more exposure than I like. Now that I just wrote that, I realize there may be a use for fixed based routers.
Tom