kenn, How is your bow arm orientated? The bow arm elbow should be vertical, not horizontal. The "boney point of your elbow" should point at the horizon behind you , not at the ground below you. That will rotate your arm away from the string on ANY bow. Also a grip on the bow should run down the "meaty" part of your thumb, not in the center of your palm. That, too, will help get your arm out of the way.
It sounds as though you are shooting the straight limb set up differently than the recurve limbs. It should not matter what the bow's configuration is - recurve or long bow - shoot the same with either.