Where do you source the smaller electrolytic capacitors during recap?Hi

Howdy all. I'm in the process of rounding up the goods to recap an old Pioneer SA-500A integrated amp. I'm running into troubles sourcing the smaller electrolytics as most of them have been replaced with surface mounts. I've stayed with Nichicon audio series for as much as I can but I'm having trouble finding the following in any brands: 2.2uF 25V, .47uF 25V, 22uF 2.5V, 3.3uF 25V, and 1uF 25V.
To those audio techs and hobbyists out there, what do you do when you can't get the appropriate caps? My options are to 1) leave the old ones in and not worry about it 2) substitute wiih a different type of cap such as surface mount, tantalum, or ceramic, or 3) subsitiute resistance or voltage values. The other consideration is one of cost. I'd like to order as much as I can from a single vendor. I've been looking at mouser, digikey, and allied. Even though the components are cheap the shipping is going to be prohibitite if I have to order from multiple vendors as they typically charge between 7.99-11.99 for the lightest possible orders. 
If anyone has a solution for me I'm all ears. Thanks!