Hello Lawnsite! You all may recall several months ago that I threw a rod in my 28Q777 15.5 OHV briggs. I had it running a while back, and I put it back on my mower a few days ago. The problem is that now I can hear a knocking from the engine, that I did not notice when I started it on my bench. I opened up the crankcase today and tried to replicate the knock I was hearing. There was no play in the direction of the piston (up/down), but I could get a little wiggle in the direction of the crankshaft (maybe 50 thousnadths). It's almost like the rod is a little skinnier than the crank journal. So I got to thinking, what if I had gotten the wrong rod? Is there another engine out there with a smaller crank journal? I'm stressing out b/c I am running out of running engines!