Yup - a press should be quite a help for these. Depends on how many times they have been apart. This set hasn't been apart more than once if at all and is at least 20 years old. I've been riding a couple of these old 112's around for almost 30 years. Watched my dad pound on some of these spindles and have done so myself. Some go easier than others. This particular set is stubborn. It may be worse when they have been used in wet conditions.
Jim
Jim