1983 RM 125 shock

Hello, wondering if you guys can help out. Restoring a 1981 RM465.  The frame came with a shock so I assumed it was original to the bike.  Hose is a bit worn, needs a new one but still OK, only when I came to replace the spring adjusters or spinners, the upper one holding the spring I replaced with a NOS part only to find it far wider, it was well over 50mm. The original thread is roughly 48- 49mm. I'm hoping the part was wrongly numbered and im hoping I'm not throwing time, effort and money into restoring the wrong shock. I know the adjusters on the CMS parts schematic show the 125/250/465 share the same adjusters and part numbers although, the 82 125(US) have a totally different part number.  The only identifying mark on the shock is a thinly stamped number on the base of the shock. Any help will be greatly appreciated. 

P.S. If anyone has a spare NOS hose for sale please get in touch. 

Regards Gaz.

WOW this is a way-dead thread. I sold off all my stuff a while back. But as it turns out I just happened to be here doing some research to help out a buddy. What I said 9 years ago is still true. Start with FullFloater.com on Facebook. Also there are several groups on FB just for RM 125 and 250s. Also groups for vintage MX bikes. You can list on Mark's Vintage MX site for Info/Parts Wanted. There was like another vintage site out of Italy that had GREAT stuff and there's a place called like CSMB(?) in the Netherlands that stocks older NOS parts. You're going to have to do some networking for this info and that hose which means joining different groups and talking to folks. GL    

Cheers mate. I think I live at CMS lol. My front sprocket chain guide came from an old bike shop in Canada lol. I've turned into the Lawnmower man. Go to the last 2 pages on my thread, the shock is almost done.