There have been robust quick adjusters available for many years: metal V-shaped jam or aluminum jam cleats. Metal ones can be length-changed in 2 seconds even while on the wire. BTW- I happily changed to ball-and-socket/ keyhole plate to stop badly denting the sides of my older foam A-cat.
Dacarls:
A-class USA 196, USA 21, H18, H16
"Nothing that's any good works by itself. You got to make the damn thing work"- Thomas Edison
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