Thank you Iwanman,
That seems to be the way Bencat57 got his RPi4 8G working with Max2Play as he described earlier in this thread. This may be the only way at this time to get the RPi4 8G to work.
I was hoping to make these changes to my system one step at a time, but will give this a try so I can move forward. I will be able to use the RPi4 4G in the near future when building a new player with Max2Play and DAC HAT.
Thanks again for your input!