New guy here with lots of issues.
Did an intro post here discussing all my recent drama, but I'm still pumped to see if I can make this diesel a little sweetie.

Newbie Introduction -1990 2.5Turbo 300D

Long story short, haven't had the car for that long, less then a year and I'm going through her trying to get her to be a daily driver and road tripper for the Mrs. and family.

The car ran surprisingly smooth when I first bought her, but she was leaking fuel like mad.
I replaced the IP valve O-rings, and fuel filters and got the majority of the fuel leak fixed.
A few months later, the tranny is starting to shift a bit harder and the engine shakes violently after coming down from high throttle.
I read some threads on hear, I buy two cans of diesel purge, and a set of Bosch injectors from:

I ran the diesel purge, I install new injectors, I replaced the fuel return lines.
After all this "tune up" effort, the car misses when idling, but its not a constant miss, just a miss every 3 to 5 seconds the car will shutter and buck a little.
Sometimes it is worse then at other times, other times it won't miss at all for 5 minutes.

The car drives great on the freeway with no major issues, but has slower acceleration and hard shifts. I do 0-60 in ~18 seconds.

I'm not sure what to do next, any ideas?
The current plan is to put the old injectors back in and see if that does anything, as well as replace all the plastic clips that hold the injector hard lines in place.
Any other things I should try?
Thanks for the help in advance.