Well our friends from Deutschland are not answering my constant emails, so I guess I can take that as a no.
Bigk, do you remember the year of the 510 clutch that you used and the year of your 430?
I have been scouring parts lists and have discovered the following:
The 250's use the same idler gear, pressure plate, clutch plates , but a different primary gear and hub according to parts manuals. This looks good for the sake of interchangeability between the models, but also poses more questions.
By scouring more parts lists, I have determined that the primary drive gear (161107501) and idler gear (161127501) between the clutch basket and kickstarter are the same part number as a 1990 510 TE/TC.
This indicates to me that the number of teeth on the 510 clutch basket is the same as my '88 400WR.
Can anyone tell me if the 510 clutch will fit in a 400? The only thing that may be an issue is the 510 basket runs on a bush and the 400 runs on a needle roller, but may be the same internal diameter?