[Healeys] Shift Shaft Buffer

[Bob Spidell]

#2 on this page: 
http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=28881&SortOrder=40

Looks like this 'buffer' is to prevent the shifting shafts from hitting 
the backside of the bell housing.  This is missing on my BJ8's gearbox 
and is N/A.  Anyone know if this is necessary/good idea?  I'm thinking I 
can make one from some 1/8" rubber sheet, but would be worried about it 
bunching up and preventing movement of the shaft (I would glue the pad 
to the bellhousing).

TIA for any info anyone can provide.

Bob