Find that person and shove your own bottle of degreaser up their ***.
And yeah you're probably going to have to drop and drain the tank/lines.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.