Anybody using any of the National Gypsum Proform Mud? If so what is your favorite? I've tried the Multi-use and it is pretty decent mud. Still want to try out the Lite but have not had a chance. Are there any problems that anybody has faced using any of these muds? Thanks

Got about 30 boxes of proform lite the other day and some of the boxes are really grainy. Not all of the but enough to drive me crazy. no matter what to do it leave grainy streaks. never had this problem before<img smilieid="29" class="inlineimg"...