I left mine in for a long time
They are great to use as foot steps when climbing in and out doing wiring, controls, etc. Also, I used mine to strap the fuselage down in the box truck on the way to the paint shop and back. Leaving them in can only help, protecting that precision spacing slot from any damage, use as a foot step, jacking point, etc.
__________________
Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet"
Hobbs 625
LS6-15/18W sailplane SOLD
bought my old LS6-A back!! 
VAF donation Jan 2020
|