alright here it is my DIY press. this has worked for me perfectly 100% of the time with out scratches or dents or anything else. it almost works too perfectly. ive used this on 5513, 1665, and 16610s
some tube hosing i bought from the home depot, you can see the SKU on it in case you want to by this exact piece, a solid plastic disc that was a part of my crystal press set, i put some electrical tape on the area that makes contact for added security of not scratching things, but is probably not necessary.
method- hold case with caseback against the nylon disc and put the retinaing ring on the case enough that it can sit horizontally with out falling off or shifting, place the hose piece over top of the ring it is a near perfect fit ( i may have sanded it down to fit perfectly over the ring i dont remember) get enough tension in the vice to hold all the parts straight horizontally, start cranking the vice slowly, rotate the case by backing up the vice jaws so you can turn the case and then close the vice again so you are evenly working down the ring.
this will work for you