After years of fruitless search I finally found a hardshell case big enough to accommodate my 1968 Silvertone (Harmony) Sovereign 1220 Jumbo ... it's a very oddly shaped flat top acoustic with a wide lower bout and a high waistline. I got this guitar when I graduated high school and I've had it for 48 years now. Up until now, I've always had to depend on a gig bag.
Found this old case (made by Everest) used on ebay. It's designed of an archtop and while a normal dreadnought case won't hold my big old Silvertone, this case was actually a little too big.
So, I added a little extra layer of plush fabric and now it's a nice snug fit ...
Judson, yea that IS a problem. I used a white glue, but I really wanted to find a hide glue..or some yellow glue to do the job.
You don't want to cut away the plush that is there to glue the new padding and glueing plush to plush is a losing proposition. That is why I glued the fabric to the sponge foam forms I used in a few of the cases, or just rolled the fabric up in others. Nothing is permanent, all the cases I've done so far can be reverted to stock.