A couple of thoughts:

- Was the gyro originally starting to blink because the battery power could have been getting low? I've read that the gyros take a good amount of power, and will be one of the first things to drop out as the battery gets low. Loosing the tail control means "time to land" and get a fresh battery! The stock 1000mah batteries would normally only last for about 5 minutes of flight...

- If the nose is consistently going left, the tail servo just may not be adjusted correctly. There are other threads that probably discuss this problem in infinite detail, but normally (if I have the directions right) you want to move the tail servo back on the tail boom (toward the tail), to give the tail rotor more pitch at the servo's neutral position. Try just moving it slightly, since a little change here can have a big effect. Also check out SubZero's set up videos on YouTube too (but be aware he spells the user name weird). They cover this and a bunch of other topics in an easy to understand way. Also consider the Xtreme 43T tail drive pulley as a cheap ($15.70) upgrade. It gives the tail rotor a lot more speed, allowing it to move more air and hopefully control the helicopter better - once it is adjusted properly of course. It is available here: http://www.ushobbysupply.com/product...63020130d54fb0

(By the way - I'm a huge fan of U.S. Hobby Supply - you can't go wrong buying repair parts and upgrades from them)!

I'm sure someone else will have lots of other suggestions for you too!

Hope this helps!

Dave