Some 0603 soldering with regulated iron
First the usual without adding flux at the beginning, the rosin core gets very nice results and perfectly tin first pad,
but 2. Pad is not fully soldered, even when flux added and more soldering time used
2. adding some SMD flux at the beginning the tinning of first pad is a bit slower
I use a relative aggressive form of getting the resistors off, I highly recommend this only when the left side is a solid copper plane that completely surrounds the pad, in very few cases that ripped a pad off with just s small trace connecting it