Well I got my response from Rick, and I'm posting that email here for you guys to read.

This is what Rick wrote in his email:

Do it the modern way: RTV.

Install m/cyl. Fill recess w/RTV. Slip pushrod, attached to pedal, into
the
goo, bottomed. Use bungee cord or weight, to maintian light / moderate
pressure. Don't touch for 24 hours.

Done.

Rick
----- Original Message -----
From: "Bob McKinney" <moparrush@yahoo.com>
To: <rick@richardehrenberg.com>
Sent: Thursday, February 28, 2008 12:40 PM
Subject: aluminum master cylinder question


> Hi Rick,
> A few months back, I purchased one of your
> master cylinders for my project. Well I have gotten
> to the point of my build to install it, and looking at
> the back of the piston last night, my MC that you
> shipped me does not have the machined area for the
> retainer. Can you help with this?
> Bob McKinney

First of all his ad clearly states that these are machined for my pushrod and a direct bolt in deal. Well gooing up my master cylinder with RTV isn't exactly a bolt in deal, and secondly what a half [Edited by Moparts - Keep it clean] solution to the problem. I'd have to say be weary of this seller. I sent a response stating I wanted one with the machined recess, so in all fairness I'm giving him another shot to do the right thing. Well see....