Mike,

Something must be wrong in the way their database is set up? When you do a search for GMS 61 and then click on parts, it doesn't bring up very much in the way of relevant parts.

http://www2.towerhobbies.com/cgi-bin...I=GMEG1061&P=Z

Yet to do a search for GMS 61 piston, it brings up the piston, wrist pin and ring.

http://www2.towerhobbies.com/cgi-bin...=++&search3=Go

Cannot beat the price of that ring?

Then to do a search for GMS 61 parts.... it brings up everything.

Enjoy,

Jim