![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGfbZHmHk_g0MBiuRROIM3qahJJRzlAq73adBoRjoxGh22-WoLcWZsup4wX6DOQsDe3rZJ2KXmUFBfjGMcJ1vg6pcS8IKWPHFGIvZ2bU0_YMRaJR6ucaxzC8ii6xd8yPfCS1WPjdohFoE/s320/Picture+1418.jpg)
This is a really neat detail that not to many people know about. There are two styles of long rib cases. The serial number boss on 42, 43 and some 44s have a recess at the bottom of the pad where it meets the radius of the case. Here is a picture of the front of the pad
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYphHjr-Od_nHWFoOdDWrU58q96E4Ev84iRk-iojo9NClrLrFjoQodsvxnZrfaW-rfDE8pS7lHF0LGxNz4QS54Q07urKbkAo23gT5HNEknFwYkwzCCOtBtp_ZRIkOnH9p_SgMnqnLaNRU/s320/Picture+1419.jpg)
and here is a pic of the back. The casting is different on the cylinder base area as well. I will post another pic in a bit.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKOYIQt7AEstKkFrcpaqNQ9N1p-1H01-9C6TD6bgeDUlETLoSdZytGDFdbWbtaLFAxWH7rgNgPtIhMpaOnnOiEPwyLEcVypV4TEBj-Mlt1VicHd14Lx8R1OLqJj46q2d7P6NwkpLauYtY/s320/Picture+1423.jpg)
my dad got the flywheel bearings set, and the end play sorted out. Time to prep for final assembly!!!!
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZoe0152zqsZrqf02DrZ9rsKUF7RfEo6mpOLwBnP6e8Y_Q8NhhlGn6rqxIhg9piQDf0VxgQXA6fXu3qNTgwiViF5s6OLfFiEUKAtCVB9bqEdE2_uOyAETWh3AFzT77vYRTXlfImAW6Jpo/s320/Picture+1416.jpg)
We spot face the bosses where the case studs nuts go. they get kind of worn down after 50 to 70 years of getting rebuilt
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgyKRo2IOLn3hHRVHn7C4joj8FCZDmql37Wnd8rAN3-r8yJs1TRj4X6s1q5y8ZYSHEA6kYFjTo_moIONGdrMm9-sNaLNXFCCoBOme4YB8fudqCjOiL0TyELGs2YrPrX2Dx5RN7UPXf388E/s320/Picture+1417.jpg)
OHHH AHHHH shiny! The next step after all the bosses are spot faced is to do one more wash in solvent and water ane prep for final assembly.
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