So, before and after comparison. No more worrying gap at the TB front cover. Putting back each IG coils to their original cyl position. As it is the front bank, very unlikely to suffer from moisture issue like we saw on the rear bank but ...
The rubber seal on both IG coil covers were replaced and applied silicone grease for further protection before the installation. Seems like the air cleaner element is not checked during the major service in UK. Looks like it is only replaced based on the mileage and not by the actual condition of the filter itself. ...