K5synth

Greetings,

I have a question in regards to full vs. twin mode of the k5.

In full mode, it seems that I can only modify an existing preset. 
When switching to full mode from twin, any changes I would make to 
the upper frequencies were not audible. Any suggstions? 

Thanks,


Dave

P.S. Theres a K5 on ebay right now (keyboard version)