I have a Ruger New Model Super Blackhawk in 44 Mag and the ejector rod housing screw keeps coming loose. The housing itself appears to be made of aluminum. I would like to tap the threads in the bbl with a bottoming tap and run a die over the threads of the screw to clean them up and put some blue thread locker on. Does anyone know by chance what thread size it is? According to what I found on Gun Parts website, it states they are 8-36 for the New Model Blackhawk. Thanks for any help.