I'd be interested in "go/no-go" opinions of others, based solely on the
following information ...

"Naturally aspirated, carburated, light twin (C172 engines) - hasn't been
flown for 3 weeks - at the conclusion of last flight was fueled to the max.
Has since been observed to have fuel dripping from the right-hand engine
nacelle. Has been checkd by engineer who has put it down to "full tanks +
volume change due to temperature changes".

No other information available.

My initial thought was "why wouldn't the excess fuel get forced out through
the tank vents, rather than through "something" within the engine bay.

How many of you would / would not fly this aircraft based on the above info?

(I appreciate that more info would be nice, but it's all I have available).

Many thanks,

Cheers,