Rear rotor lead plug fouling
 

Need some insight for diagnosing.
Car has BHR coils and midpipe (engine is rebuilt professionaly with maybe 20k on engine). Started to have a rough start and got rougher and rougher. It always drove fine after startup with no hesitation. Found that the rear rotor lead spark plug was slightly loose and gas soaked.

Replaced the plugs and it helped for like a day. Checked the plugs a few days later and the lead plug was soaked in gasoline again. Thought it was the iginition coil not firing properly so I replaced all the iginition coils and plugs with my stock setup to try and remedy the issue. Now the car is even worse off. It barely idles, misfires, and stutters.
https://cimg9.ibsrv.net/gimg/www.rx8...237f313a73.jpghttps://cimg3.ibsrv.net/gimg/www.rx8...8c7f1341e4.jpg
Pic is of new plug (3 days old)that is gas soaked. Will post old plug later.
So what do you guys think?
Could it be a leaky injector? Are leaky injectors an issue that comes up? Could it be ignition related? should i buy all new set of ignition coils and wires(old plugs and wires worked fine just replaced with BHR as a precaution)?

What are the LTFT and STFT's like? If you are getting lot of extra fuel from an injector you should get the ECU trying to trim it out. Usually you will get a CEL if it is really bad

The standard " compression" check is always an issue with rotaries...

Update to close out thread:
Replaced coil packs and wires with a brand new set and fired up like a champ. Car is perfect again.
So it ended up being a bad rear lead coil on the BHR kit. And found that my old coil packs and plugs that were sitting around were junk. Moral of the story is don't use old ignition components when trying to diagnose a possible ignition issue.