Very Low volume problem

[zx11]

Hello I got a metro amp superlead drop in board to rebuild a 90s superlead reissue. I also switched it to a superbass and switched it to kt88s. It sort of works but the volume is about as loud as a tv set half way turned up. I know the wiring is not the best, this is the first tube amp I have worked on and I should have picked a simpler project.

here are some high res photos

Index of /amp

any ideas?
Thanks

[acorkos]

try measuring your voltages at your tube socket pins
The Free Information Society - Marshall Voltage Chart Electronic Circuit Schematic

[Jazz P Bass]

You could try measuring the signal voltage at the power tube grid pins.
Set your meter to read volts ac & crank the amp with a signal going into it.
Post the results.