hi    when i get a new radio-  i always silicone the RX crystal  in  its place-once had one break the board it was plugged into from vibration -i do the same with the  TX    i will remove the back of the tx case and screw down the screws behind the gimbles-this will increase the stick pressure against your fingers giving you more of a feel for the sticks location-and gets the stick back to center a bit quicker- i will also lengthen the sticks as much as is possible -that gives me a longer amount of throw and slower control of a given control surface-than with the sticks set shorter