Defending on what radios you have, there are numerous re-capping kits on Ebay etc.Check that source out.
I regularly restuff the electrolytic cans and have never had an issue getting the caps inside the can- and usually higher capacitance and WVDC than the originals.When done right it is about impossible to tell they have been updated so I put a small round label on the top of the can.Dale W4OP
Axial capacitors are becoming obsolete. There is simply very little demand for them anymore. The selection is dwindling and prices are rising. I expect they’ll become completely unavailable in the next few years.