You probably need the bezel tool to tighten the bezel.  Not sure if '65 has the switch retainer like my '67, but that keeps the switch oriented properly in my car.  It's a stamped metal part that locates on the back of the switch and connects to the bottom of the dash via a single sheetmetal screw. 

You get in these cars after 50 years and so much has been hacked up, lost, or put back together wrong its often hard to know exactly where to start.  I highly recommend a set of factory assembly manuals.  They are sometimes still hard to decipher, but I've learned a lot about how my car was originally put together, and was even able to make some parts that were missing once I new what I needed the part to do.  I've come to the conclusion that the car was gutted at one point and used as a race car, and then basically thrown back together, half wrong and with a lot of small parts and hardware missing shortly before I bought it.