Originally Posted by
JAMMINKRAZY
They do stretch a bit over time, which is why you need to keep an eye on shimming, and make sure you keep it tight. Even replacing the case every now and then is a good idea. Another big thing is, if you have a R&P go out, replace the case when you put new parts in. The heat/stress caused by the R&P failure tends to mess with the case a bit.
I hear you but you know, at the point a R&P go out and if the case did stretch (I don't know how you could actually tell unless you throw a set of calipers on it and compare it to a new one) you might as well buy a new assembly. Without actually looking it up, to buy the parts including the case is probably much money. Have you done the research? I haven't!