guitar modeling issues

i have two guitar files im working on, one im trying to makea proper carved top les paul, i have the offset outline placedapproximately where it should be on a les paul before the carvedtop begins to bulge.. and i even have a 3D partial outline of thecontour of the carved to..

the other thing im trying to do is model a neck thru strat typeguitar, i have the neck contoured properly, body contouredproperly, what im having trouble doing is getting the neck, body,and horns to blend in with no heel (look at the back of an ESP M-IINTB, or jackson soloist guitar)

any ideas on how i can accomplish these two tasks?... ive trieduploading the .SLDPRT files, but it keeps telling me the file typeis not permitted.. so ill link to photos for now

the strat:http://farm4.static.flickr.com...3658_b40660b011_b.jpg

the les paul:http://farm4.static.flickr.com...15520_19371d1648_o.jpgSolidworksSurfacing