Thanks for the responses! That calculator is exactly what I have been hunting for and could not find. I found several L-Pad calculators but they did not back calculate the existing network values. Using this calculator the difference in the attenuation would be about 0.34 dB (3.49 dB attenuation with the original vs 3.15 with the different values). So, slightly less attenuation with the new crossover. My guess is this change would not be noticeable - to find a difference I would need to break out the measurement gear.
Thank you for the input and responses. Much appreciation!