I just purchased the WM P51 Ep model and they say that it takes Micro servos. The micro servos I have are the Futaba S3101 Micro Presision. These seem to be to big. The Hitec Sub Micro servo HS55 Fits into the mounting holes in the plane. Should I open up the mounting holes so they can take the Futaba servos or are they to big to use.
Also can I use a Li-po pack instead of the recomended 7 or 8cell 1000mah Nicad battery. If so would a 2 or 3 cell 1500mah li-po battery work with the stock 400 motor and a 20 amp brushed speed controller.

Any suggestions on a Brushless motor that would replace the stock 400 and go right into the model