The best that I can say is to start over with a bigger scale and go with MRC's UH-60 line up! Very good kits out of the box and plenty of after market kits to choose from.
If you want to stay with 1/48th they have detail sets for that too!
Check these options out!
http://www.cobracompany.com/
I have ordered from them before, good people and fast service!
Straighten up and fly right.....