As of right now, I'm not going to take it apart again until it needs another thorough cleaning, this is the first time in about 7 years I've had it tore down( I have a very small ig pool). Seems to be working pretty good, gonna keep an eye on this DE powder, I can live with a little bit. Didn't see the arrows the first time I took, it apart, but I must have gotten it back together correctly, actually looked like it could only go back together one way...took me a minute to figure out and make sure I didn't have one of the tube sheets upside down.. Had an old finger assembly in the garage, I took a look at it to be double sure I had it right. Will look for hairline cracks around the shaft holes next time, but a cursory inspection didn't reveal anything the first time.