Hey guys, so a little background. BL auto, about 25k miles on the trans. New FTI converter this year, the car was BPU for most of the trans life, but for the last 3 years, probably 8k miles at the most has been single. 2 of which it made 680, and now 840 this year. I obviously dont beat the hell out of it or run it on kill constantly but probably about a month ago i was cruising down the highway at like 65. Not sure if the trans was locked or in OD, but it started slipping up to like 4k, i left off, put it in neutral, pulled over, back into drive and it was fine for another 40 or so miles till i got home. Since then Ive done multiple highway pulls, and 1-3rds WFO, and a bunch of normal cruising w/o a single hiccup. The other day i was driving home from a carshow, popped it from drive to neutral, let the RPMs settle, and gave it a nice rev to about 5500. When i revved it, the car kinda jumped forward a little and sorta shuttered. I let the rpms settle, and back into D. It started acting a little weird, shuttering and slipping from a stop untill about 20mph. Came home, parked it. A few days later, i actually forgot it happened until it started doing it again about 10 miles in the trip. When i say it slipped, it would slip up like 250rpm max and was super inconsistent but shift fine. I pulled over, checked the fluid, it was fine. Started it back up and drove it a little further to the store i was going to and back home which was another 20 miles and it was completely fine w/o a single issue. It never got hot, new fluid and filter x2 this year and the fluid is fine still. Im just assuming 3 years of 3x the power it was meant for. Jw if theres something i can do to check it out w/o pulling it out besides changing the fluid and filter again?