Never did a Rock Island but have done hundreds of GIs and Colts.
And a good cross section of clones from Kimber to Norinco. The
only one I ever had trouble with was the Remington when they
1st came out. It was machined so rough it was a PIA to get back
together. It made my fingers bleed. So some of these clones the
problem is not with assembly steps, it's poor machining of parts.