ONLY HAS 72K MILES AND HAS BEEN MAINTAINED IN PERFECT CONDITION. RUNS GREAT
EXCEPT WHEN TOWING. IT DOES NOT HAVE THE POWER IT USED TO HAVE. IT STRAINS
ALOT ESPECIALLY GOING UP STEEP HILLS. HAS NEW PLUGS, PLUG WIRES, OIL, AND
NEW FILTERS. ANY IDEA WHY THE LACK OF POWER WHEN TOWING? COULD THIS BE A
CLOGGED CATALATIC CONVER?