I had a Tower .46 on a trainer. No matter what I did, I couldn't keep it running. Tried several different heat ranges of glow plug and was always tuning it. I feel I am a fairly experienced glow engine tuner, but nothing seem to keep this baby going reliably. Fortunately, the trainer was pretty forgiving on deadstick landings. It didn't seem to be the tank or fuel lines, because I put a VMAX in its place, which I got from Richmond RC (long story). That VMAX runs perfectly and has NEVER conked out through two flying seasons. I can't say I recommend the Tower .46.