Anybody who built the Tamiya M48A3 knows about the incorrect sprockets. Or maybe they don't.
I found a company in Germany that does make them. It's a resin housing and metal sprocket set. I have not put them on yet, they do look correct and hopefully a perfect fit. My camera stinks it's really bad and will NOT make a clear picture of small items even though I tried some of the suggestions members here gave me. I appreciate that but nothing works, I need a better camera.
Anyway these sprockets look great and are technically correct as far as I can see.
The name of the company is MR Modellbau
http://www.mrmodellbau.com/_shop/product_info.php?info=p509_drive-sprocket-wheels-and-final-drive-housings-M48-Patton--for-T.html
Just email them, they did get back to me. They also make a lot of other stuff some for Patton tanks but this product is awesome, pricey yes because of the dollar against the euro but worth it for me. Saves a lot of time and work, they look so much better then what I did to fix it.