Installing a new Holley Red Electric fuel pump to replace an existing one that is going bad. I took apart the old one and noticed that there were very small bits of foam around the flame arrestor screen. At first it looked like metal shavings. Took a peak in the fuel cell after all the fuel was drained and noticed the previous owner had safety foam added to the cell. I imagine that this foam is breaking down and flowing through the fuel system, which seems like a huge cause for concern. Is this foam necessary for a fuel cell? Looks like I now need to blow out the entire system.