Well that's a brave move:-) I can see your point and i admire your will to get it as accurate as possible! On the other hand i have learned from own experiments that sometimes it's just as fine to leave things as they are ( as long as they are not really obvious mistakes ). After a while when the model is finished you won't see them anymore and enjoy the result anyway.
Just make sure you're not causing yourself more troubles with the decals. I f you change the body proportions they may not fit well enough anymore...