GS645 A star lit night

Haven’t used my Fuji GS645 for several years after fire and CLA by a friend.
Looking through the rear of the camera a bright spot of light could be seen.
Light leak! Should be simple fix. Later, in the evening I shined a bright flashlight
into the camera’s back. The whole bellows brightened up like a star lit summer
night. Don’t want to invest in new bellows until camera tried out.
I am trying a fix for leaky bellows found on line: Tulip matte black fabric ink.
After several applications all the stars seem to have disappeared.
Loaded camera with Acros 100. Shall confirm if this works.

good idea to use Acros since its reciprocity makes it one of the best films to use to shoot a star-lit sky.