I've done that repair a few times.... The kit will have instructions but you just need to pull against the needles as you twist past the stops, you wont hurt them. I carefully scrape the circuit board with a razor, emphasis on the carefully, before using a pencil eraser to clean the contacts on the board You have to use plastic to scrape the old residue from the glass, and that is quite tedious. When instructed to cut the frame, and as well as when you snap things back together, you have to be very careful. A shockwave through the plastic can destroy the LCDs. They don't tell you that.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff