Is a wah pedal necessary?
Conclusion: the wah should be good, but not necessarily. Wow, it most likely sounds weak compared to your design or not the way you would like it to be. I can’t live without a wah wah pedal!!!
Ha ha, now youYou can’t smell the radio! If you put the back protector on, will it still work?
The crowd whistles as they pedal forward probably not I don’t mind… but the “mmmmmmmmmm” noise is what is it never missed? This is a lower frequency and therefore no hum. This is a functional indication of poor performance of power supply filters or close fluorescent lighting, a similar action that creates noise. If you’re near lights or anything, you need to put away your stuff (or turn off the lights immediately) and see when you can get that high. Put that skill back on the cover.
As for clicking noise, typing noise… Personally, I’d take the PCB off and put our own solder back into the input jack. This may be true, as is the output connector. Bad soldering could have caused that click and possibly the remote control (ok, that would be fine, but…).
Check that the 22 pF cap is properly soldered. This should bypass HF. Look at the solder joints of any input stage. If sparking continues (withm power supply…), I would put your 68 pF cap on the input of my terminals. This should not affect any other frequencies that may be transmitted to you (you will not know they are there). Is an aspect of fixing what’s going on. Better understand why.