1) most copper washer assortments are standard sizes.[usually have 10 you can use and 50 or more you never use, same as 0 ring kits. You figure the price per washer used.
2) 6.5 injector washers are metric [ kit is hard to get, and have same problem as standard kits]
3) hunting down 1 or 2 washers can be time consuming and therefor costly.
There is absolutely no reason not to reuse the old washers if they are otherwise in good shape when restored to new condition with procedure discribed.
A small pocket propane torch, a piece of steel wire to hang the washer from and a cup of water is all that,s needed.
This is what repairing is all about, make do with what you have if it can be done right.
