The "no pre-twisting" may come from the statement on some wire nut containers that says "pre-twisting not required". It doesn't say that you can't pre-twist them. I can't think of any reason for the no tape rule. With solid wire, I always pre-twist the wires with my Kliens, and if the box is especially tight I have been known to tape up switches and receptacles, of course that was when we could work things hot.
Don(resqcapt19)
