Do you have codes for a check engine light? If bank 2 isnt firing at all, you could have a bad upstream 02 sensor. You can do all battery reset for 5 minutes and see if it fires for just a few seconds since the battery reset will clear you store fuel trims data. If that doesnt change anything, id do a compression test across that whole bank and compare to the side thats running normally. If low or no compression on that bank, id suspect a timing issue (I see that you replaced camshaft, but if damage was done prior to replacement, that cant be undone by resetting timing)