RE: whisker biscuts
You will see this question regularly on all the forums, I posted it myself a while back. I use one and it wrinkled the heck out of a few of my 4 in. vanes and it also will leave black marks. It can tear the vanes off or chew up the front of it so a drop of super glue can help prevent that. As for the wrinkled vanes, I was told it should not effect the flight unless it's really bad and to try some heat from a hairdryer to get them back into shape. Once the vanes get really beat up or I get motivated I'm going to re-vane them anyway. Some say when you switch go with2 in.Blazers and some say Dura vanes (work really well with the Biscuit). Probably some other opinions as well. good luck