I have an R1, along with a few other 1911. I bought it as a low round count used one off the EE from a reputable fellow.
It's by far one of my favourites, partly for the GI style of the thing, which is a better setup for bullseye or duelist type stances.
I did remove the firing pin block, mostly to get rid of that Rube Goldberg contraption that offended my sensibilities (JMB saw no need for such a "safety" so neither do I). It didn't make much difference for the trigger. The trigger is a touch spongy, or has a bit of creep, but it is still by far the 1911 that I shoot very well with great consistency.
I don't know what else to tell you. It's a solid gun. If your used one was taken care of there's probably not a whole lot to worry about.