But the originals in the Race brakes are steel...
Yep, the originals are steel!
Your woes may only get worse with alu replacements unless very careful with tightening. If you managed to round the steel originals then just having the deeper head may not really help. The bolt shank is liable to snap if over-torquing the alu bolts, even if the head remains intact. Sounds like you have the right approach to tightening though. Finger tight and only just tight enough for the lever to not rotate on the bars. Steel or Ti would be better for most people.
Its a long winded gratuitous thread - sorry about that - So I'm not surprised that folk wouldn't/couldn't read from beginning - But I wouldn't have considered the situation thread worthy had I over torqued - the fact that I didnt and bolt still failed was/is the premise all this highly dull nomsense ...
