Overloading Output Levels when layering sounds

["M. Steven Ginn" <sginn@airmail.net>]

I am currently using a Repeater "in series" in my rig, with the Repeater
being the next to last item just before my Lexicon MPX1 which I use
mostly for reverb.

It seems with my setup that if I start building layers in Repeater
(overdubbing) or even just lay down one repeating loop and then begin
soloing over it, my output levels tend to overload and distort.  I know
this isn't necessarily caused by the Repeater since at this point, it is
just one more sound producing unit in the signal path (at least I don't
think it is the cause).  Anyway, can someone tell me if I running
everything in series is the main culprit and if this is why an aux send
bus system is better for building up and playing layers of sound or am I
missing something in properly balancing my gain structure?

My setup:  synths => line mixer, line mixer => compressor, compressor =>
Repeater, Mo-FX connected to Repeater effects loop, Repeater => Lexicon
MPX1, Lexicon => direct box for House connection.

I am using a Repeater, but I think the same situation would apply if I
used an EDP as well.

Thanks,
Steve