I am building my first garden railway (prior experience in HO). I am going with battery (CVP Airwire) and maybe live steam down the road. Since my track will be unpowered (Dead Rail) and floating in ballast, are rail joiners sufficient or should you always opt for clamps? I've been unable to find anything on this subject, but the recommendation for clamps seems to be pretty consistent but it seems to be for powered track. Thanks, Pat