RE: DL-50 engine
Joeairport,
I use the same latex foam as you since I started in r/c when receivers were hand stuffed and soldered. Back in the day we would make a foam boxes glued together with contact cement and slip the receiver and battery into them. Lots of chances for crashes due to radio failure back then, we did everything we could to prevent it. Now everybody just tucks the foam under the parts.