Anyone retube VTL 5.5 w/phono

I'm been bitten by the tube rolling bug!!
I have a VTL 5.5 with the built-in phone stage and NO manual. What stated it all was a lot of noise from the phone stage without the TT even turned on. I replaced the back pair of 12AX7's w/ NOS Mullards's and it's a lot better but still has a bit of noise. It has a mix of tubes in it now and was going to replace the rest on the phono board, but not sure to stick with the Mullards or try something else. Also was going to start on the line stage board...I was thinking of starting with the front pair, 12AX7,s as well. Any help would be great...Jim