I have over 900 materials out of the 1000 allowed on board despite dumping hundreds of grades 1,2 and 3. Now I only keep 50 each of the common ones but still end up dumping loads, worse now since ED have upped the harvest from 1 to 3 units per hit in v2.1.05. I have tried not scooping them at all only keeping the ones I want and maybe I am wrong but it seemed to me that doing that cuts down on the amount of 4's and 5's being spawned at all. I spent two luckless hours today searching for Polonium available at 0.6% according to the scan and could have filled an Anaconda with what I dumped but not a hint of anything good. Lots of Chondrite and Outcrops and I found 5/6 instances of Mesosiderite, Metallic Meteor and Metallic Outcrop but other than Niobium of which I have 48 units zilch. I was looking at the material filters and wondering if it was worth a try in order to reduce the amount found. Has anyone used this option and does ticking the various boxes include or exclude that material in the search?.