[TenTec] Eagle and Zero Beating

[Michael A. Goltz]

I hope some of the Eagle experts out there can help me.(???)
I am tired of running into a certain W6 on CW who keeps telling me I am 100hz high and why can't I zero beat his signal.
I operate CW only and I have been CW only since 1963. No SSB at all. Don't want to go there.
This guy is telling me I don't know how to operate my gear. I probably could not hear the 100 cycle difference even if I was able to use a separate RX!  My hearing is not that good anymore!
Anyway-tell me a way to use the Eagle so I can  zero beat a received CW signal. Is there a way? This guy was going on and on about me using the RIT AFTER I was zero beat if I wanted to hear a different pitch.
How can I do that If I don't know if I am zero beat?
This is probably a question with no definitive answer but any help would be appreciated. Give me a step by step and I will certainly try it!
Thanks!!

Mike -N8DNA  (ex N8TNA)