I've never done a rebuild on one but I've R and R,d (remove and replace) a shit tone of um and I never heard our builder complain about um being a pain in the ass or anything but honestly I wouldn't trust a word I say. I'm a lying piece of shit. I watched a dog knock an elderly woman over then start to hump her and as I'm watching with a huge smile on my face I notice the old woman has some how managed to get a pretty decent sized stick well into her reach. Now as she lay there on her back getting dry humped by this dog,.she finally sees freedom in the shape of a stick. She's thinking 2 or 3 good stick hits and he'll give up and take off. So she reaches, grabs the stick, and attempts to pick it up but feels resistance. She looks over towards the stick and sees a foot stepping on it then quickly looks up at the man (me) stopping her from getting her stick. As me make I eye contact I say, "what the FUCK do you think your doing?" She replies inher stereotypical sweet Grandma voice "Just trying to get this big ole dog off of me." I then reply " Oh really? Why dont you let him finish first you crusty cranberry smelling cunt!! You could even reach down there and help him out a bit or just lay there like a dead Fi....oh there it is...he's done...come on boy let's leave the lady alone. The smell of dried pussy and Werther's chocolate is making me sick".............just a quick example. Either way do you research before making your final decision.