Troy, not trying to tell you how to suck eggs, and you are probably aware of the problems with the Revell engines, there are several ways around this in case you hadn't seen before.
One method
http://www.britmodeller.com/forums/inde ... l-737-800/
alternatively there are aftermarket items
There are 2 basic alternatives
Braz, which you can get from Hannants
https://www.hannants.co.uk/product/BZ40 ... rency_id=8 currently out of stock though
or Authentic Airliners
http://www.authentic-airliners.de/epage ... ts/A144-07
also currently out of stock