Hi there, I recently purchased some screen material on eBay, and actually installed it on the frame that I built today. The question that I had for you guys was; Is it normal that I had a hard time tightening my screen material ? The material was very heavy and robust "good quality" stuff, but when I flip the frame over to look at the finished job, I noticed that there were very slight waves from left to right of my screen, I assume this is due to the fact that the material was rolled up for a long time. Will this wave effect leave or vanish at a certain point in time ? Was it normal that I had trouble tightening the screen material around the frame ? The link below is the screen material I used... http://www.ebay.ca/itm/115-HDTV-MOVIE-PROJECTION-PROJECTOR-SCREEN-MATERIAL-/300429334992?_trksid=p5197.m7&_trkparms=algo%3DLVI%26itu%3DUCI%26otn%3D3%26po%3DLVI%26ps%3D63 Thanks in advance Jesse !!