I had a buddy rebuild my Galaxie carb and I installed new fuel pump and new lines (had been sitting for decades), got it running, everything was shot in 2 years (rubber diaphrams, rubber lines swollen and soft). The replacement Holley I ordered had a tag metal banded to the new carb "use with ethanol based fuels voids any/all warranty". I had to clean out gas tank and install new rubber lines on my chevy II due to what I presume is ethanol (with stabil in tank, but not the "new" version for ethanol). Every pro I speak with from small engines to mechanics cuss ethanol with every breath and so do I. ask small engine guys about weedeaters and chainsaws that have tiny rubber lines that sit in the tank what happens to them due to ethanol additives.