I watched Grips, Grunts & Groans since my last posting. Near the beginning, when they are running away from the railroad cops (or whatever those guys were), they are running up the street toward the camera, then turn left in front of the gym, & bowl over the baby carriage (which seems to me to be in poor taste, but that's another topic for another day). Those 3 guys running are NOT our boys. I noticed the Larry stunt double in particular.
I'm not sure why they used stunt doubles to fall on a sidewalk (although I personally would have!), since Moe & Larry got tackled on a sidewalk in Slippery Silks, & Moe & Larry also tripped over a hose & fell onto a sidewalk in Mutts To You (both of which were filmed after Grips, Grunts & Groans), & there were others I'm sure.