Date registered: Oct 2012
Vehicle: 1968 250S, 1991 300se, 1998 SL500, 1977 450SEL 6.9. Past MB's; 300SD, 300E, 300TE, 190E, ML420
Mentioned: 12 Post(s)
Quoted: 488 Post(s)
That small of distance and slowly pushing will cause no damage.
Check you shifter linkage bushings, they may all be bad or gone.
With car safely supported, watch under car as shifter is moved and see if lever on side transmission actually moves.
Good to hear car is now running again.