pump?

hi everyone , .... my wifes iron produces steam but it just blew out of the release valve under the pump . ive stripped the pump down and it was clogged solid with scale , no problems cleaning it out , however my problem is the bolts on the pum , 4 of the eight have sheared , im stummped now as to wether i try and get someone to drill out and re thread or ...buy a new pump , does anyone know of a supplier ? , MR are about as much use as the scaled up iron!!! there must be a supplier somewhere , ive now put iron back together - so as not to loose any screws or parts , could i ask , if anyone has there pump to hand , are there any serial number on it or makers marks - i will google them ....the other train of thought is to buy a faulty iron off ebay ,,, assuming its not the pump that has packed up on the ebay one , ive had a look and there are a few on ebay at around a tenner ... so might be a good source of spare at a reasonable price .... cheers ...