Kevin just so you know some of the guys that are making this kit R/C have found that the main hull halves are bowed. Put them together and sometimes there's as much as 1/4" or more of a gap in the middle see
HERE for an example which also shows how to sort it.
The guru of modern R/C Submarine's Dave Merriman has been putting up a very thorough series of posts about how to built and convert this kit to R/C over on the Subpirates website :
http://www.subpirates.com/viewforum.php?f=30
Davie