You'll need to shunt the upper path's dry signal around the delay blocks. I forgot to include that in the last example routing.
The amp blocks would probably be the best place to adjust dry levels. I'd set delay 2 to 50% mix and adjust its Level L & Level R values as needed. The reverse delay block level will be the master delay level for that amp. Delay 2 Level L will set the relative level of later repeats.
There's Amp 1 dry signal at Out 2 but not Out 1 with that routing. Route like this instead: