Question on FR 66s

Having been listening to FR 66s for the last couple of months with a few cartridges, I think that it is definitely outstanding for low compliance high mass cartridge. In my system, Koetsu Coralstone and Ikeda Kai sounded exceptional.
I tried Koetsu with JWM 10.5, TW 10.5, Graham Supreme 12 inch, Reedd 3Q and heard it with Vyger linear tracker, current version of Triplanar in other systems and none came close to what FR 66s can do with Koetsu. I prefer Air Tight PC-1 supreme with Reed, Dynavector XV-1s with Graham. Both work well with FR 66s as well but not on the same performance plane as Koetsu and does not outperform other arms in my system. I only try Ikeda Kai with FR 66s so far and it really sings such that I have no urge to hear it with another arm just yet.

@suteetat 
I read on this thread that you have a few protractors including a clearaudio and have an FR64 arm.
I have both the FR64S and a Clearaudio protractor. Using the 231.5 Bearwald pivot to spindle length my cartridge fully forward in the ehadshell still does not reach the little circle for the stylus. If I use 230mm I can - just. I've read that the Clearaudio is very similar to Bearwald - is that correct, or did you have the same issue finding that you had insufficient headshell to get the right overhang

thanks

Using the 231.5 Bearwald pivot to spindle length my cartridge fully forward in the ehadshell still does not reach the little circle for the stylus.

It depends on the cartridge mounting slots and your headshell size and slots size too (jelco), your cartridge is Denon 103 designed in the 60’s.