RE: parts for a tower hobbies engine
Depending on the condition of the bearings, you might consider replacing those while you have it torn down.
[link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXJB03&P=Z]Rear Bearing[/link]
[link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXJB02&P=Z]Front Bearing[/link]