I've started construction on a rocket that is unusual, in that the rear is wider than the middle/front. I designed an internal launch lug that runs the length of the wider rear assembly and exits the front. Initially I had planned to use a 3/16" launch rod, but failed to note that there isn't enough clearance for a 3/16 rod, let alone the diameter of a 3/16" lug. So I downgraded the lug/rod to 1/8", which looks like it'll work. The rocket will be just under 24" long, and launch weight should be around 6.5oz. I'm using a C11-3 and later a D12-5 to power the rocket. I want to avoid rod whip, so I wonder if I am likely to encounter any problems with such a configuration. Launch speed is around 44fps off a 36" rod, according to Rocksim. In theory I can redesign the rocket to use a wider rear tube, but that will cause further delays and cost, which I would prefer to avoid if I can. Thoughts?