there should be no fuel in that line,
and maybe i should have worded that different......rtv sealant instead of silicone,
tons of us have used permatex hi-temp copper to seal the intakes on these bikes,
it is not fuel resistant, and must be left to dry before running the bike, and has sealed our intakes sometimes for years
ultimately the solution is to pull the clutch cover and remove the white plastic gear,
so the pump does not turn, but alot of peeps have run it with the pump still on,
and nobody has ever proven to me that the pumps fail ever, in use or not