So I bought a sprintech mirror (http://www.amazon.com/Sprintech-Drop.../dp/B0028YBQQI) from my local LBS and had a bit of trouble installing them after taking the handlebar plug off my drop bar. After getting it 2/3rds of the way in he suggests and uses a mallet to get it in. After a few strikes its on.

Just was kinda awe at use of a mallet on my road bike. The drop bars appear fine - not visibly ruptured (they are aluminum). Is the use of a mallet normal on installs like this?! Maybe I'm paranoid - it's a mallet after all.

Should I be looking at anything else in regard to damage (could the effects propagate elsewhere?)?

Thanks