We have had similar from CBL in the past which has been solved swiftly with the noticing that the f****ng paperweight they had supplied for £250 odd quid was crapper than the £150 one supplied from elsewhere.... Got a credit note in the end and not had a issue since.
Holts did it for me in the space of two weeks
@Komatsu i'm afraid with the revelation that they don't own a decent sized torque wrench (A scaffold tube is deemed appropriate for counterweight bolts) and another fitter responding to my pisstaking with a accusation we had filled the machine up with dirty fuel.
I don't suffer fools... no one who spends good money should be expected to.... Don't get me wrong we had one fitter who was a absolute gem. BUT they have missed out on two second hand machine sales down to the fact that I know there S/H dealers history and a game he played in the past.... So I can't be f***ed to deal with him.