Hey fellas new here. I’ve got a 2000 24valve vp truck and the trans has been rebuilt. Receipt says reman billet converter. From time to time I have lock/unlock issues pretty sure it’s the alternator wire. Problem now is the truck is easing into lockup, shuttering, rpms just fluctuating at lockup. But it only does it under moderate to heavy throttle but converter locks up fine under full throttle. Doesn’t matter if comp box is off or on level 5. So is this converter issues, valve body issues, voltage problem or what?