Well, that's good news, Tom!
One thing to check out - the 500 pf caps may have been that value to limit the lows somewhat. If you find that your audio is now very bassy with too much mid bass and distortion, it may mean you will need to put in smaller cap values. Where are these in the circuit... bypass caps or coupling caps?
In order to get a hi-fi sound cleanly, it may require a lot more work to pass the lows.
However, the DX-100 has perhaps the best stock audio out there - somewhat better than communications quality.
The best way to see where you are is to connect a padded audio generator to the audio input and sweep it from say, 70 Hz to 7 KHz and see how clean the sinewave looks.
Be careful when sweeping below 100 Hz - you can easily pop the mod transformer if modulated much over positive 70% or so. Do not let it go negative -100% at ANY frequency, whatever you do. Be very careful not to have a loose connection or plug that causes an audio spike. This can kill that iron quickly.
Here's an article I wrote about sweeping your rig:
http://amfone.net/ECSound/K1JJ1.htmT