Another difference in the LA and FX series of engines is in the carburator. The LA uses an air bleed and the FX uses a second needle for low and mid range adjustment.

In the local (DC metro area) try Doug's Hobbies in Waldorf for good pricing and service. They have a 2 page ad in RCM magazine. phone 888-DOUGSRC (toll free)

Where do you plan to fly? Many clubs in the area but none in DC that I know of.

EXCAP232