Hi Louis
This type of job is why you should use a router table
it will let you have full control of the cut.
Both the 2 1/4 HP and the palm router may have the same error that's to say getting on and getting off the stock with out putting a nick in the chamfer and I'm sure you want it sharp and clean.
If you don't have a router table you can make one quick and easy,just drill hole (in 1/2" plywood or MDF) to let the bit run free, mount the router, 2 1/4 hp or palm router and clamp a block of wood down for a fence (2 x 4)( put in a pocket hole for the bit in the fence) then run your stock by to get a nice clean chamfer from one end to the other.
Note***keep the hole as small as you can for the bit....1/4" free on both sides of the bit should work fine.
Bj