My really grreat DFP paddle shifters have started to give multiple upshifts. The first time, I just got a new wheel as the old one was out of warranty. The second time ( lso out of warranty) the same thing happened I decided to see if I could do something about it.
This procedure will almost certainly void any warranty, so don't do it unless you are really desperate or just like doing this kind of stuff. The process requires some soldering skills, but the rest is pretty straight forward.
For me the end result is I know have 2 wheels with coirrectly functioning paddle shifters. I know, why don't you just use the stick? I guess I just really enjoy sequential paddle shifters.
Good luck, proceed at you own risk.