I have a Ruger Blackhawk in .41 magnum. I have installed a Burris 2x using a Burris mount and Redfield rings and a SBH hammer for easier scope clearance. I now wish to install a Bisey gripframe but keep the SBH hammer and the stock trigger. Ruger service says the entire Bisle trigger assembly (INTERNALS) must be installed to function with the Bisley gripframe. I don't really want to deviate from my original pla. Is this possible? Thanks.