performance installing corvette servo 4l60e

BTW, this servo was ordered from Oregon performance off eBay.For anyone doing this swap. I'm not sure if anyone has had this problem but I'm puzzled and very worried about damaging my transmission. I'm currently in town a ways but when I'm free, I plan on taking it on the highway to see if the truck will stay in OD. If I shifted from OD to 3rd while lightly accelerating, the rpm was unaffected.

When off the gas, the rpm would drop down to 1100 or so (I have 3.42's) and when I'd lightly hit the gas, it would jump to ~2000 rpm. After an hour or so, I went to get some grub and noticed that when doing about 45-50, the truck wasn't shifting into OD. Took it home, cleaned up and did some stuff around the house. The truck shifted into OD as far as I could tell and seemed to hold OD when lightly accelerating from 65-70mph. I then took it on the highway and it seemed to be fine. Everything seemed to be fine so I lubed everything and put it back together. Today, I took it apart and realized we forgot to install the 4th gear piston, so I reinstalled that, but also took out the whole assembly again to make sure nothing was missed. I kept the truck in 3rd just in case keeping it in 'D' was to hurt something. After that, I drove home from his house and once on the highway, I noticed I didn't have 4th gear. After the install, I test drove it through the neighborhood and a few main roads and it seemed to shift fine. Yesterday a friend and I installed a Vette servo in my truck.

Performance installing corvette servo 4l60e