Fidelity Research FR-7 Repair

Sorry chak, I see an rubber ring behind the headshell connector
while the higth of this ,uh, cheap instrument, does not allow
lowering of the stylus to the marked position. One need to guess
where the stylus point should be. Together they make at least
2 mm error. So there is then no sense to speak about different
geometries.  But if one use (plastic) caliper with one ''leg'' after
the connector (without rubber ring) and the other on the stylus
point one will get exact effective lenght  and use the obtained
lenght for all other  cart/headshell combos. I adjusted this way
20 of my MC carts in their (separate) headshells . Checking with
my Mint tractor made for my SP10 /FR-64 S (Bearwald) confirmed
the results. Changing carts can then be done in 5 minutes time.

I don't use any rubber rings and the pictures provided above are from the internet to display a $7 the plastic overhang gauge to the OP.  

So dear chakster, You can sell your Feickert  and buy one plastic
caliper which you can use for all your carts/headshell combinaions.
The only thing you need to separte are your tonearms and headshlls
which you use with them. 

I'm not getting the Feickert because my buddy has a protractor. I'll never use another cartridge again. I don't never know where the Orsonic is at this point. My plan is to install the FR-7 and hope it lasts forever. Well, maybe next year I'll buy an FR-7fz. That way I'll have two FR cartridges in the house. Just in case. 

I'll have to check but I think I have an overhang tool around here. Thanks! I'll look at calipers.

Dear lech, your ''info'' is confusing: ''all the carts which I used with
Orsonic'' clearly suggest more than one cart. Well you  don't
need the  caliper for only one cart (FR-7). Caliper is for ''copy'' of
one good adjusted cart. The eff. lenght (distance pivot -stylus tip)
 can be repeated by other carts.