odd capacitor help

[whomeno]

going to build a Fender Bassman 5F6 Preamp from here.  http://tagboardeffects.blogspot.com/2018/10/fender-bassman-5f6-preamp.html
But having a hard time trying to find the following parts 20nf and 25nf film capacitors and 250 uf eletrolytic in radial.
I built the jcm 800 superlead preamp which uses the 22nf and 680uf and 330 uf.
Anyone now where I can find these parts?
Thanks

[PRR]

Use 22, 27, 270 caps.... it's not critical.

The 1959 original had caps which could vary 30% from nominal value.

[whomeno]

Thanks PRR that is what I will do