Bike stuttered tonight under hard throttle......

Coming home tonight the bike stuttered up high in the revs under hard acceleration. Filled up not long ago, but switched to reserve anyway and it did it again.
I pulled over at a servo down the road, switched to "prime" on the petrol line and shook the plugs, got back on, and I couldn't get it to do it again all the way home.
Thoughts?
I pulled over at a servo down the road, switched to "prime" on the petrol line and shook the plugs, got back on, and I couldn't get it to do it again all the way home.
Thoughts?