i may or may not have had experiance with these types of items. i do not recall senator. but if i had, i would think that i would have been seriously frustrated at trying to get the proper fuel/air ratio. though i can neither confirm nor deny it, i may have heard that ether is the propellent of choice.
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"It is a far, far better thing that I do, than I have ever done; it is a far, far better rest that I go to than I have ever known" - A Tale of Two Cities - Charles Dickens