when I changed out the tubes on my ac30 I noticed that the little wire "cages" and small black bands that hold the cage to the tip of the power tube just seems weak. today when I moved the amp back into the closet after playing it I heard a jingle like one of the wire cages was hitting the tube. I did not pull the back off to look as I was leaving.

Is there a way to secure the tubes and cages better than a weak piece of plastic that does not seem to have much elasticity in the first place?
Search ebay for spring ones to fit. They're really cheap. Here's a pic showing the ones I use. Not an AC30, but same type of tube.

Gilchrist custom
Yamaha SBG500
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100

Cathbard Amplification
My band
Last edited by Cathbard at Jun 2, 2013,
thanks for the replies, yeah they are those weak suck flimsy wire things. the spring type retainers look much better. I will look for some of those.