Parts for 300B PSE

[paul(555)]

Having acquired an unfinished kit I've now determined that a few components are missing. Thankfully this amounts to just a few capacitors i.e. C7/8, C9/10 and C15. Can anyone help with the souce of the originals?

My box of bits also includes a selection of Jensens and Black Gates, however one pair of Jensens is 0.27uf rather than the original 0.22uf part, are they useable?

Finally, the original bridge rectifiers are missing from the box, but look to have have been replaced by four marked GBPC 3506W, are these direct replacements?

Any help would be appreciated.

Paul.