Re: Mk1 Escort Gear Selector
Nice clean looking 'scort you have there !
If you check underneath at all points of pivots (articulation) and all clips and rods and fittings look intact and not ready to fall apart, you have very little to worry about, as this looseness is to be expected after 40-50 years!
Since you cant go very far "for fun" with this COVID19, this may be the perfect time to fix it.
If all the pivots and their shafts/holes under car from Tranny to Shifter are not unduly worn, then start by overhauling
your in-cabin Floorshift/Selector Quadrant Bushes.
"GOOD BETTER BEST: NEVER LET IT REST: UNTIL YOUR GOOD IS BETTER, AND YOUR BETTER, BEST"
( Furphy WW1 HORSE-DRAWN water-tank end-plates)