Heaviest Headshell?

Weight can be added by mounting hardware too. ...

I know but not enough weight. I have 3 quarters sitting on the headshell now which is like 18g with the Blu Tak. I'd like a more permanent solution. 

Lead weights, like the ones used to balance wheels.

Certain FR headshells can exceed 20g easily. You’ve glued 3 quarters to a 20g Ikeda? What cartridge?

No the quarters are on an sme headshell. The cartridge is a Decca London Super Gold. 

I am using an Ortofon LH 9000 headshell with my Koetsu Urushi. The headshell weighs 18 g. But it costs a lot less than $300. To that you could always add more weight by various methods as you know. Your cartridge must be remarkably low in compliance.

It is. No cantilever. 

I went ahead and bought a Yamamoto that's 18.4 for a good price and the brass screws that soundsmith sells. I also saw a sme headshell spacer/weight on ebay that I ordered. Hopefully that'll get me heavy enough to use the extra SME counterweight. Highest mass possible is best for this cartridge.

I remember the earlier Decca cartridges, the 4R and SC4E. They were big, heavy, and noncompliant. It is hard to imagine that those didn’t gouge the grooves, but they had a devoted following. I still own an SC4E, which I would not think of actually using.

There are better looking screws (compared to SS) available from ebay, this what i've been using with my Reed 3p to add a bit of mass. 

Here is another heavy headshell from AudioCraft which i am using with low compliance carts on my SONY PUA-7. In my arsenal this is the heaviest shell. 

Thanks!

the arche is pretty heavy

I forgot to mention anothe one on the heavy side
The Orsonic AV-101 Black or Silver, they are often on ebay NOS

I forgot to mention anothe one on the heavy side
The Ortonic AV-101 Black or Silver, they are often on ebay NOS