Ive got a dart similar to the one above in gofast's pic above and it works fine for what im doing but it can sometimes be a bitch to work with.Eventually i learned all the tricks to it and it cut my valve lash time in half.
I wouldnt even waste my time with that crap on my next engine, Jesel all the way.I help a few of my bros who have jesel with their lash sometimes and it is sooo much easier
CS
I've looked at the Dart and sometimes I wonder if one copied the other???..LOL..
Actually if your gonna go with the Jesel type, TD surpasses them!..