Hey guys!

I am trying to get together all the parts needed for a small
maintenance job for the ol' 2001 S10 4x4 ZR2. Long story short is that I think the TPS, 1-2 accumulator, or Solenoid A is on the fritz due to some delayed 1-2 shifts. I have already upgraded the servos with a Sonnax 2nd/4th Gear Longer Apply Pin, Sonnax 2nd Gear Super Hold Billet Servo, and Sonnax 4th Gear Super Hold Billet Servo. So even if the problem is just the TPS, I am going to tackle everything I can on a still installed 4L60E while I change the filter and fluid during some regularly scheduled maintenance. I was leaning towards replacing the following parts and any others that you would suggest that I could reach from under the truck with just the pan off during a filter and fluid change:

Drain Pan with Drain Plug - No Name Brand
Thicker Separator Plate and Gaskets - TransGo Performance 46-PLT-96 (No Drilling required *crosses fingers*)
Torlon Check ***** - .250" TORLON CHECK BALL 10 PC
Pinless Forward Accumulator - Sonnax 77987-01K
Pinless 1-2 Accumulator - Sonnax 77998-03K
Pinless 3-4 Accumulator - Sonnax 77998-03K
.490 Boost Valve - 77898E-3K Early Design
Solenoids A & B
Filter
Synthetic Fluid - Dex IV (I think would work?)

Thanks in advance