I would soak the engines in a coffee can filled with denatured alcohol over night. Then lube them up real good with a quality oil. Spin them by hand a few times. Replace the fuel lines for the tanks with new fuel line, even the line inside the tank. While the tank is apart, check the stopper and rinse the tank with the alcohol. Put everything back together. Use a new glow plug and see if they start.

The radio need to be gold stickered, so you may need to check that if you want to use them.

If you are asking about getting a new radio, it is like asking what is better Ford, Chevy, Dodge and so on. I fly with Airtronics and have not had an issue. Most radio now will work with the helicopter and planes so you can use (1) Tx and have many Rx's. With getting a new radio, if you think you may stick with it, you can shop around and get them from $100.00 on up.

If you watch your sales, these go on sale for around $150.00 or so.

http://www.hobbypeople.net/index.php...y-rds8000.html

Another one

http://www.hobbypeople.net/index.php...o-w-rx600.html

And a budget radio

http://www.hobbypeople.net/index.php...-air-sd5g.html

The changes in RC have been drastic over the years. Lots of new good stuff out there.

Buzz.