Tried first attempt to knee drag the other day (on public road, but clear of traffic, debris and the weather was awesome) but it hit my peg feelers. Thinking the feelers were just in my way, got back home, took it off and took it again for a spin on the same road the other coming week.
Still haven't touched my sliders. lol.
I'm using stock IRC tyres. Maybe the size and the tyres were not suitable?