There are genuine people on this forum who go out of their way to help you and there are others who you see asking for information regarding the locator and where to source parts and when you send them a pm for advise don't even bother to answer when you know they have read your message.
Anyone wanting to know any numbers of the parts used in the mk1 locator I will try and help as I have quite a few mk1 boxes and quite a few of the parts have the numbers on them.
There are people on this forum who know what the different parts are and where you can source them from, but are a little shy when it comes to sharing the information
Ive found once the stoppers are torn, even though they heel well it it seems to be a re-occurring problem when running on hard ground, if thats the case you might have to start taping them up