[RadioDR401]

Just a follow-up that some might find helpful.  I located a PDF file of the 1937 Rider Philco Radio Receivers alignment manual and found a section that discusses dial alignment.  Since I had replaced my 89 dial strip with one from Radio Daze, it turns out that my initial dial alignment was off by about 1/8".  After adjusting the dial/tuning cap I followed the Rider alignment steps which are slightly different from the official Philco procedures.  It resulted in much better overall sensitivity and improved reception on the low end of the band.  Below is the link for anyone that might not already have it.

http://www.silverslingshot.com/PDFFILES/...s_1937.pdf