Hello all,
I am curious about the lifespan of these heads. We have around 5 Tigos with these heads and 2 of them sometimes not register hits and stop on point. This behavior comes totally in random times and I start to believe that they have reached their lifecycle limit. (one actually has been crushed so maybe it is also the problem :P ).
I cannot find this info in the manual and a fast search here was not fruitful also. Thanks in advance for the replies or references 
