Regardless of age and type of burner module, I don't sell spares for it, I consider a 'module' by definition to be a whole unit and not a collection of individual bits.
Apart from that, it's also my belief that any gas appliance for that matter, always give due warning before becoming in any way dangerous, only when these warning signs are ignored do they become a big problem.
With that in mind then I won't supply parts that might get it going but still in a dangerous overall condition.
The good news is the burner module as a whole is very straight forward to change, normal commonsense is what's required.
Over 12yrs and of all those I've sold to individuals, there has not been one single issue, after all, if anyone has been in doubt, I've only been a phone call away!