I can't say i recommend it, there's a greater chance of doing harm then good. In all honesty i'd say to leave it alone and send it back to microsoft if it breaks.
Just for the record, i bought my 3rd 360 yesterday. I'm not exactly loosing any sleep over the reliability. Personally i'm recomending mid-august as the best time for anyone who's looking to pick up a system.
The 360 can sink or float on it's own merits, it's just that knowing what I know about the system it kinda sucks that MS hasn't made significant changes yet.