Do I need to find a new spot to mount my switch?
It is installed drivers side port next to stat.

Pic from blackberry inside T-stat

is it bottoming out in there & not screwing in all the way?

Not bottoming out. It's in all the way. just worried about the flow

I wondering if a fitting like the extras that come w temp sender units between the sender and the manifold to raise it (the sender) up but still leave have enough penetration into the coolant would work. SB intake?

yep sb intake