You are correct that the original circuit is a 10k in the thread I posted for you in part 4 he listed using a 100k, and I believe I found the build docs you might be working off of using 2M for R24.. It would still work but I’m not how sure it would jive with some other pedals if I’m correct in assuming it might significantly change the output impedance (I could be totally off on that). If I were you I would start with 100k and see if you were happy with that. Hell you could even socket it and work your way up or down, the 2M in that position doesn’t pose any threat to the pedal it’s self given I only looked at those last output components and not anything up stream in the mods, probably not the most technically correct advice you were looking for but this might nudge someone to come along and give you something more concrete.