Oracle Delphi Mk V suspension height

Those not familiar with the Perfectionist Engineering polymer bearing are probably puzzled I did not find huge differences in my old Delphi I/II and the Delphi V. Unfortunately this guy suddenly disappeared and the supply of polymer parts was very limited. It took a while, but I have now installed the bottom part of the Mk VI bearing in my Mk V. This means the contact of the spindle is now fully dampened by polymer. It gives an even lower noise floor (very quiet), fuller bass and more nuance in the sound.

The springs are correct (yellow, red, green) & seated correctly, 2-3 turns show below the holder. The bounce is good. I did not disassemble the bearing to check the thrust plate, but the spin is free. The distance between the bottom of the platter and the top of the sub-chassis is ~2.5 mm.
For me to get 20mm the platter would be touching the sub-chassis. I also have a concern that there is ~1 mm vertical play of the motor shaft. This might explain why the deck to top of pulley is 70 instead of 71 mm, but I cant explain the 3 mm anomaly. BTW does anyone happen to know if the Torlom thrust bearing for the Mk VI can fit the Mk V bearing?

Wrote Oracle Tues & Wed, no response yet. Went to Lowes & got a faucet handle removal tool. Raised the pulley by 2 mm to a height of 72 mm above plinth (spec 71). Raised the skirt height to 19mm (spec 20). Good enough for me. But the Oracle specs will not allow the belt to stay on for this model.
Note I have owned & maintained an Oracle for 33 years.

For the sound question: The old Oracle is a Mk I with the Pabst Hall effect DC motor, the Mk II suspension, a Perfectionist Engineering polymer bearing, a separate linear 27 V DC power supply, an acrylic platter mat from Holland, and is in good working order. The replacement is a Mk V SE (with granite base and Turbo PS). I took the tonearm & disc from the old table to the new, & made minor adjustments in VTA and azimuth.
The individual sound differences are not as large as you might think, but they do add up. The biggest difference is in "jump" (macro-dynamics?). The bass goes only a little lower, but is cleaner. The imaging width & depth is a little better, the noise level a little better (micro-dynamics?). The sound is a little more precise throughout. The sense of realism is much improved. I couldn't go back.

Rec'd a response yesterday from Oracle. My setup is OK. The 1mm free play of the motor shaft is normal. The Torlan thrust plate for MK VI can be used in the Mk V bearing.