GuillermoRosado,

Pls see response below.

About your answer to #1: is it possible to have a registration which ONLY modifies the hold button and the split point?
>>>AJ: Yes. When you press UTILITY -> Page 2 -> REGIS MODE; in this screen, YOU can determine what a REGISTRATION should/should not change/memorize. When set to 'ON', a change in REGISR will endorse whatever value the new REGISR holds; however, when set to OFF, a change in REGISR will maintain only the settings within the current REGISTR. This way you can use the REGISTR feature to it's max. I will endevour to do some more research on the other points you mentioned.
Thanks,

AJ