Yes.....centre of Tower is Pivot point.
I do have the Dyna XV-1s which is currently mounted to one of my FR-66s arms..........but I also have 38 other cartridges ready mounted in their own headshells and all of them have been played on the FR-64s as well as the FR-66s.
In fact......with ALL my cartridges......I set them up on one of my FR-66s arms (which I can do very accurately using Dertonarm's UNI-Protractor).....and then simply swap them between 4 of my other arms (the Copperhead has no headshell and the SAEC WE-8000 S/T has its off-set angle built into the headshell).
My point being Suteetat......that I have had no mounting problem with over 40 cartridges in either FR arms......and I even had an Orsonic headshell which caused no problems?
Perhaps the Airtight is a 1 in 50 cartridge?........but something is certainly untoward in your experience?
I do have the Dyna XV-1s which is currently mounted to one of my FR-66s arms..........but I also have 38 other cartridges ready mounted in their own headshells and all of them have been played on the FR-64s as well as the FR-66s.
In fact......with ALL my cartridges......I set them up on one of my FR-66s arms (which I can do very accurately using Dertonarm's UNI-Protractor).....and then simply swap them between 4 of my other arms (the Copperhead has no headshell and the SAEC WE-8000 S/T has its off-set angle built into the headshell).
My point being Suteetat......that I have had no mounting problem with over 40 cartridges in either FR arms......and I even had an Orsonic headshell which caused no problems?
Perhaps the Airtight is a 1 in 50 cartridge?........but something is certainly untoward in your experience?