Hi,
The Teflon upgrade will basicaly consist of exchanging the following :
coupling caps 8 x 0.15 uf x 600v
the 2 number 0.15 bypass capacitor in the input ---these do not nec need to be there if you replace the 1uf poly with Teflon
the 0.15 bypass caps in the power supply.
For the most part all 0.15 600v polystyrene will be replaced with Teflon.
If you are struggling to read the schematic best to stay away from the board.
Almost all the c1 upgrades follow this basic pattern ----there can be transistor changes to the power supply as well . On the premier 140 I count min 14 caps for changing --do the maths using v cap cutf 0.15 600v as a guide.
Hope the above helps --its just guide don't shoot me down if I missed a couple .
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