A few weeks ago I replaced my rectifier/regulator after troubleshooting with some help from this forum. Today I took the bike for a ride and after a mile had to turn around and limp it home. It was grossly underpowered and I could tell that one of the cylinders was not working. After some troubleshooting and looking at the DTC, I popped a P1351 and a P1354. I redid the connections for the R/R and that solved the P1351 code. I then moved to troubleshoot the coil itself I noticed that both my positive and negative terminals were loose. I tightened those and the bike returned to normal. Another symptom I had was that my radio display would flicker on and off. It seems as all my problems have been fixed. I just wanted to share as I use this forum a lot to help me and hopefully, this can help someone else.
2012 FLTRU BIG BLU PEARL