When I start the washer and it starts to fill with water, I hear constant banging and the hose shakes, it's like if it keeps turning the solonoid valve on off on the cold side (I think, I'd have to double check). Is it doing this to regulate the water temp, or could it be defective? This can't be good on my plumbing. Also do water hammer arrestors really work? I may get one installed if this is in fact normal, as that is some serious wear and tear on the old copper pipes and if it decided to break that could really suck.
Plumbing scares the crap out of me but I might venture in that world and do it myself. Also pex tubing looks easy to work with, think a 2 year old could do it. :p It's all copper now but I could change that up as they made a real mess out of it anyway.