I spent a little time on the briggs twin in the LA145. The air intake had some rainwater in it, so I pulled the plugs and shot some WD-40 and oil in the cylinders. I turned it over by hand to verify that both pistons were going up and down, which they were. I then removed the rocker covers and the valve train looks good and moves as it should. Stuck my thumb over both spark plug holes and got good compression. Had to stop working on it while a heavy rain came through and now its getting dark. The starter is missing so I will need to spin it over with a drill to check for spark next. I see starters can be had for $35-$40.
I think I will swap out a carb from one of my CV15/16 engines to test the L110 out and if its good just order up a carb for it.