I can't trust mine because almost every time I take it out something breaks, misses, shorts, shudders, vibrates or just plain quits working! I get one thing fixed and another problem takes it's place. It could be that way 'cause I'm doing the work on it, ya think? (and it's a hit & miss thing w/me).
I've been told by Doctors that Medicine isn't an exact science. I feel that way about my 914!
But I'm still having fun w/it and learning about cars too
bruce