I was just reading the Rectoverb manual, and it mentioned that the Master volume feeds into the Send jack. Perhaps try lowering the master volume?
What happens when you have low master volume, low wet mix on the boogie (a few %) and a low mix on the Timefactor/mod with killdry engaged – i.e.very little of the 'factor? Does it ever sound normal (even if at really quiet volumes)? Or is it always nasty?
