Testing either of two back-to-back clipping LEDs in circuit will not yield any definitive results. One leg of each LED needs to be lifted to test. At best while in circuit, if both are seated/oriented correctly, swapping the probes on the DMM while testing should display the same result. If one...
The last cap in the circuit (between the Top and Volume pots) is a 2n2. I suggest increasing that value to taste, starting with a 4n7 to bleed more bottom end to ground.
The Deflector/Afterneath "Density" control, should add a rather significant dimensional change to the reverb. If all you're getting is noise from it, you should be able to dbl-check your component values, hookup and soldering to correct that.
Marketing mostly.
Still marketing.
This also falls under marketing.
Pretty sure it's still a marketing thing.
I've seen a lot of shoddy soldering in commercial pedals. I believe it comes down to marketing.
None of the above. It comes down to marketing.
When the DIY build gets "marketed" it...