[TenTec] Omni VI BFO Crystals

[Ken Brown <ken.d.brown@hawaiiantel.net>]

I recalled someone replacing the stock Ten-Tec BFO crystals with some 
made by ICM (International Crystal) and achieving improved stability. 
Searching the archives and emailing the person who posted the 
information, resulted in a bounced email, probably due to an out of date 
email address. I have decided that I want to buy some ICM crystals for 
my Omni VI BFO. Can anyone give me some details about how to specify the 
crystals (I know the frequencies)?
DE N6KB