[Amps] Hunter 2000C recap suggestions

[walnutcreek at appstate.net]

HI all, A Snap Crackle Pop and a blown fuse occurred this morning.  I am looking for suggestions for recapping this amp.  It currently uses 6 = non-available 140 uf 475 v caps, each with two 82k 2w bleeder resistors for a 3kv supply.  I have on hand 9 125 uf 450 v caps with a 500v surge rating.  Can I use these as a replacement?  
Thanks,
Cam
WA4JKW