Just had Rear Spring TSB done, have question

I am taking my truck in tomorrow to see if they will put the extra leaf spring. What other things can I watch for after they are done to make sure its done properly?
did you have to load your truck with heavy load to show the dealer that it was bottoming out?

thanks

 

Assuming that when you did the TSB with the new springs it made the truck ride stiffer?

 

Guys,
Just got mine done today from the dealer. and now
my drivers side has
48220-35020 Spring Assy, FR LH

the passenger side has 48210-04570
The both look different.
Can any one confirm what that spring belongs to?

According to the forum here, the passenger side should have


48210-35A20 Spring Assy,

 

just got this part # 0400128104 from dealership is there a place i can look up to find out if its what im suppose to be getting?should be new leaf springs