I bought a Cimarron 1878 earlier this year and I'm slowly tricking it out for CAS. I've reversed the triggers and welded them to reduce the pretravel, extended the hammers, bent the lever, reduced the mainsprings, funneled the chambers, and generally polished the China out of it. It runs fairly smooth. I wish the chambers had been better from the factory as they were the worst I've ever seen, but I've polished them to reasonableness.
My next step it's to do something abou