[Steve Davis]

Remember your 25 cycle radio is now a 60 cycle radio. Higher value film capacitors are available at a reasonable price. I would use a 1.0 for the first cap after the rectifier and increase the value of the rest, except the cap across the choke. That cap, should be the value shown for the 60 cycle radio or better yet, delete it. Using a larger value here can actually increase the hum.

Steve