I hear rapid clicking, but I doubt it is a low battery like you suggest. It was fully charged three weeks ago. Still, I will have to ckeck the battery.
Also, the starter is flushly mounted up against the engine so even though the two mounting bolts went back in with difficulty (top one is only a tad crooked)(the bottom one was stripped when I initially removed it, but a new bolt went back in well enough with a little grease) the unit feels firmly mounted and flush/straight.