Hey Bruno (and anyone else with loose arm woes), here's what I did today in trying to solve the "loose arm" problem with my Hallmark. (Incidentally, this proves to show how true the H60C is to the Mosrite heritage!)
Now the factory-applied Locktite on my H60C's trem arm had lost it's grip and had become ineffective (I detected remains a bluish resin that had been applied on the screw head).
The secret lies not in how tight you turn the screw (with every risk of stripping the thread!) but in preventing it from turning itself loose by using other means.
Yes Locktite helps...for a while, depending on your style of tremarm (ab) use.
Here's what I did: Took some of my
teflon tape (plumber's tape) which is ever so thin and stretchable (if that's a good word), wound it a few times on the thread of the screw and fit it back on again. The srew's thread is nice and snug in the arm now and I have a hunch it will last for quite some time...
Good luck!
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