ya thats the main challenge in building this combiner ,well frankly speaking its really a big challenge to build this which I'm really enjoying the process ,thats the fun of kitbash keep on trying new methods and discover more tricks in handling all sort of situation .Cheers  
Anyway I have updated some info of the scratch build groove ,I think this is what people r looking at in this combiner ,it took me 2 weeks in building this little thing kinda tricky though but manage to get it done proper still needs a proper head to complete it any contributions guys and ideas  

 

That Groove is extremely cool. I'm glad you took my crit in good spirit. I don't mean to talk down people's personal preferences, but I like to see people do their best.

 

Like I say criticism can improve where I'm heading if not I would go blindly for what I did.I need good advices from you people here ,Thanks and all the best to you too ,I will try my best to create something out of the box Cheers