Thanks for the response Uncle Knucles.  For my first goal I was indeed going to follow Marsofold's Tek primarily and I will take into account your advice. And you're suggesting to do a second run on the same material (the MHRB) with either the xylene or limonene correct? I guess in my two seperate goals above I was picturing two seperate batches of MHRB......

Thanks again for your reply.