The fuel in th eoil is from whenever that oil was run.
If you didn't use Blackstone, then go to whomever it was and get their analysis explanation. if you have doubts, then ask if if 4.4 is 4.4% or .044 % Huge difference.
if you can smell it in the oil then I think you know the answer.
IMO a misfiring cylinder is probably not going to dilute the oil to 4.5 %
The fuel pump is moer likely. Float bowls set way to high. Dumping fuel down the carb from a can. All more likely causes
