Thank you, Italo.

Maybe this is another issue, or maybe not:  

I have attached the "dynamic strings pad" patch which was designed for the 4000 series. I guess that's from you. It works perfect for all kinds of guitar.

This patch works as designed on 4000 Units. 

Conversion to 5.3 or 5.5 (same result) to the H8000FW goes well without errors, BUT the envelope module right at the beginning of the patch does not work properly. It acts as as kind of "through"-Module, literally doing nothing except letting the audio pass, and the level(?)-meters (env ->a_to_c -> hmeter) are  all stuck at 50%.

I have checked parameters and audio and control routing and I can't find any difference to the 4000 version.

I have attached this patch in 4000 version.

Any Idea?

Thomas