I see from e bay the Indians are now producing the rear frame for the late (48-53) rigid B Series models..B31 and B33...
Probably another one to avoid then...
Interestingly, for around £450 (not that cheap) they are throwing in the rear stand...Even though these models all had a centre stand and there's nowhere on the frame to mount it to... ...Mere details I hear you say...
Perhaps if they make the M20 rear frame section they'll realise the stand doesn't fit that either..even though it's supposed to...or perhaps they won't.. ....Ian