It is a little hard to make out what you are doing from the code fragment. But if you are able to assign Out83 to a variable, and you want to use it as the two lists required by a plotting routine, then the problem is that the plotting routine wants two arguments, and this is a single list containing two lists. This can be remedied by replacing the Head (the first level of the list) with Sequence, which can be done by Applying Sequence to it, the short form being @@.

For example:

You will note that the syntax checking in the Front End still suggests more input. But once the Sequence@@ is evaluated, Plot3D has the two lists it wants for range specifications.
Best,
David