Hey Man....
TR-6's should be no more than 30-35 bucks! They are not iridium. You don't need it. The TR-6's have proven to be an AWSOME plug for lightnings that are mild to wild!

 

Hopefully I'll get it done this week. Fishing too many tournaments to work on truck. The 4477s are iridium TR6s. If this doesn't fix it. Next up I guess is the cats being clogged. I'll post as soon as I get them installed.
Dave