If you put one cartridge in a six shooter and play Russian Roulette, the odds are five to one that you won't have a discharge when you pull the trigger. I'd rather do something right the first time and not have to worry about it.

What's really funny is when the model flies okay for a while with the tank through the firewall and then one day, after many flights, the engine begins acting funny.

I've seen people chase their tails and end up rebuilding engines a couple of times because of fuel foaming and eventually end up replacing several different "bad" engines.

After all, it couldn't be caused by the model that has flown flawlessly for a year or so, could it? Models change over time and resonance points move around the model as they age and wear. What once worked well, is now causing problems, but sometimes people just refuse to see it. Habit, I guess.

To each his own.