[DeTomaso] gas fumes

[SEL]

hi guys - after driving the car and after parking in the garage (closed) for a few minutes, I come back into the garage to a very strong smell of gasoline - the car was (and is each time) run for a good long time, at temp and at speed - what would you check as to cause? - there is no obvious leak (certainly nothing dripping or the like) - could it be leftover in the carb? -  to my inexperienced ear the car seems to run fine as to the carb - not rich not lean - of course, i am not sure i would know otherwise - any thoughts are appreciated - thanks, stephen