I am a naive drone developer and I did a disastrous mistake in the initial stage of my drone development. I have ordered S550 hexacopter frame and MAD components motor with 18*6.1 inch propellers. The arm length of the frame is 233mm hence I am unable to fit motors on the frame, as they are colliding. I have already spent lots of money on this equipment so can someone suggest a way out in this scenario. Cheaper props need shaft with thread but MAD5008 300KV does not have threads and shaft length is also small. Can someone help me out in this scenario? Thanks in advance.