D
Dumbo
What I have noticed in the past when putting levelling compound in fairly thick is that when running a spike roller through it can push some of the levelling along in front of the roller like a bow wave . I guesed this is to do with the spikes being to close together so today i took an old spike rollet apart and broke the centre out of half the spike rings and put itback together with half the spikes only . Got to say it work a treat .