Just bought a used bigfoot coil for my xlt. Took it out to a local ball field for a test run. It seems to work fine, but the vid numbers are running about 20-30 points higher than they should. Nickels were running in the high thirties to low forties. Pennies were ringing up in the 80s as quarters and quarters are coming in at 95. Didn't have time to test another coil, but last week with 5.3 coil, it's vdis were right on the money. Is this normal for the bigfoot coil or do I need to have it checked out? If so, who do I send it to? I think I read that the maker passed away.