I was wondering if anyone had experienced this situation before.

engine has very recently been forged due to piston 4 failure, however since been rebuilt the idle is very rough. Vacuum is sitting around -10 when is should be -21, I am unable to find any vacuum leaks. I have also has the rear BCS deleted. The car drives fine with now issues that are obvious. So also looking for any photos of the vaccum system please?

the idle sounds like the car is very heavily cammed & there is a very strong smell of fuel

any help will be appreciated