I'm in the process of doing up my daughter's Kona Smoke to sell it. Ive removed some of the fancier upgrades and fitted a cheap Shi**no freewheel. When i came to set the adjustment of the limit screws in the RD the chain dropped gently between freewheel and spokes. And then caught on some stupid rivets holding the largest sprocket. No amount of furtling would persuade it to release. The quickest fix was to drop the wheel out and remove the freewheel. I knew it wasn't fully tight. And then my Shi**no freewheel remover wouldn't fit the Shi**no freewheel (insert angry emoji). So I had to resort to hammering the tool in. FFS.
Cursing, i then rode to my nearest bike shop to purchase a 'dork disc', AKA spoke protector. Honestly, ive thrown so many if these things away in my time, it feels like a cruel twist. But if this derailleur ever gets bent and overshoots, the chain can't be allowed to fall unto the spokes. Such an event would not be side-of-the-road fixable.
The bike shop mechanic laughed at me. They dont stock them. So
ebay, £1.99 (inc postage).