Multiple pedal volume drop

So I’m having an issue with my ML5 and volume drop with multiple loops engaged:

Set up

A: dunlop echoplex preamp
B:Way huge conspiracy drive
c: Thorpy Dane
d: victory sheriff V4 preamp
e: Trex replicator d’luxe

So the issue is that theres a large volume drop if I engage the echoplex with the conspiracy drive or the victory but If I put them both in the same loop with the same cables it works fine.

I’m also having the same issue to a lesser degree with the replicator and the victory running together \