Mine is rarely registering...maybe once in 5 or 10 hits. In test mode it's the same, although I could get it to continually register if I used my hand to spin him around the widest arc possible. I didn't have my tools when setting up last night, so I couldn't take anything apart - but inspecting it visually gives me no clue as to how it registers hits.
I'll have tools tonight so I can take a closer look...but anyone have tips? It's a unique contraption for sure.