For what it's worth, I used a reflective mylar streamer from Apogee Rockets and carefully wrapped it around the motor. Unfortunately some of the streamer fused to the motor, so next time I'll insulate the mylar from the motor with some estes paper wadding. But the motor is about 1" away from the tip of the nose cone, but the CP/CG relationship with the G55 worked very well - it was VERY stable. I cracked a fin upon landing so I'll have to either fix it or build a new one, as it separated the layers of glassine. Maybe I'll take a look at it tonight.
-Mike