yep I know what you meen I have been looking at common sense rc they have two that look good just not sure about the wieght factor and I think they will both fit. the 18.5v 4000 pack and the 14.8v 6000 pack take a look and let me know what you think I have been flying th packs the 4200 and I like them but the 5300 pack seems to be to big and the th packs are getting to be too high for me any way let me know what you think thanks bill