So i plugged in my new pedal board today to my amp, and now have very low volume on the guitar. No matter what i try, tried different cables, checked the speaker cab and it is connected to the 8 ohms output on the amp, the speaker in my cab is also 8 ohms. Tried connecting directly to the amp, still very low volume. Had replaced the filter caps a few months back and those are good quality caps, I am yet to open the amp and troubleshoot. But any tips on where to start? I think from the PI tube first? Yes, also I had replaced the V1 tube from a 12AX7 to an ECC82. to lower the gain, but has been that way and it worked very well until today. Any suggestions please?