No, feeding oil through the fill tube would do little to nothing. The place that needs oiling is deeper towards the crank area.
I'll have something to show in a few weeks, parts are being made and I have cut a cover to be able to see and video what my idea is and does, it won't be on a running...
You can call them and they will warranty it... I would need the purchase date to start a warranty. Either way you would need to know the purchase date...