I'd appreciate advice with this. And, I'd really like to be able to take out the broken piece (broke at about 1/4" down the hole in trem block) without taking out the block again, with all the trouble and re-setup that entails. Thanks much!
most of the time you gotta drill it and put a pigtail special screw in it to remove it.
Pretty tricky .
If it s an old block pre die cast Fender, take it to a repairman.
If it s nothing special get a replacement, Callaham etc imo
Ya gotta remember, that hole is NOT drilled straight into the block. It's drilled at a slight angle, and there mat be a spring underneath that broken piece. Callaham has a pretty good little write-up on this. It's pretty easy to mess up the block...
ouch! that's a nasty repair to have to attend to. all I can say is good luck. I've never kept my tremolo arms in my bridge blocks for that very reason. I have an old 70's Fender strat copy from Japan. It's one of those worthless pieces that for me just plays like a dream. When I got it it had the worse sounding thinnest single coils I've ever heard. the bridge was blocked somehow and the tremolo arm was broken off inside. The screws that kept the bridge in were completely stripped as well. I ended up having to use a wrench to get the things out. I ended up completely gutting the guitar until nothing was left but the neck and body, and replaced everything with Fender reissue stuff. It plays like a dream now, and is one of my go-to guitars.
Take it to a local auto machine shop, & have the guy easy-out it for ya. Probably cost $5 if the guy is cool. I had a mechanic in a gas station do one for me once, it came out perfect without messing up the threads.