[MBZ] 240D Shifter

[John Ingram]

The 4-speed shifter in my 240D has a worn reverse lock out.  It  
allows me to accidently hit reverse while trying to find 1st gear.  I  
hear that the 4-speed shifter used on the 115 chassis 240Ds is better  
and does not develop this problem.  Does anyone know if they are  
interchangeable?  Does anyone know how I could fix the one in the car?
Thanks,
John Ingram
83 240D