When I got my LOTR, it already had the upgraded flipper coils. Then I put in new bushings, linkages, and coil stops. I agree with you Tbone1, too strong!
So I installed a 1 ohm 10 watt ceramic resistor in-line with each flipper coil on the center lug. I just played a 30 minute game and didn't notice any fade. The Legolas ramp shot doesn't fly off into the Shire anymore and the game is more enjoyable. I could still hit the center ramp, too. It seemed just right, but I haven't waxed the playfield in about a month.
I took some ohm readings on these coils since I found a spare 5030 in my tool box. The higher the ohms the weaker the coil.
standard coil (5030) = 5.9
upgraded coil (5020) w/resistor = 5.0
upgraded coil (5020) = 4.0
This basically puts it in between the standard one and the upgraded one. Your mileage may vary, but they only cost $3 at Radio Shack and are easy to install and remove.