ok mate sound, wish you was closer lol. will see if i can get rocker off and have a gander, all the bolts are rusted off, yet another job thats on my to do list loltiming check is rocker cover off that's all, without the tool it's piston 1 at TDC with the cam aligned against a specific mark, or with the tool its pistons at same height and the tool in the cam sprocket, or oil pump cover off if you want sight of stuff,
Staffordshire west midlands matewhere in the world are you?
rotten front bolts are common, typical for four or five to need renewal,
ill have a good look through but not 110% now youv asked, just approaching 90k so needs doing along with charger service.Its always worth while plugging it in properly. Can save unnecessary jobs too.
Have you any paperwork to say if chain has been replaced?