Bumper yaw string

Yes Thanks Bumper! I too bought a MKIV and am quite happy. Although I think Bumper might be unhappy with me, as I immediately modified it. I had problems with the previous MK II or whatever it might have been, snagging the canopy cleaner microfiber cloth I use, so I ever so carefully rounded the front point and beveled the edge of the plastic. I know what your going to say Bumper, I've completely ruined the aerodynamics of the thing. But I have to say it has stayed on now for at least 4 years with an avg of 200 hrs/yr But alas its now worn out as the yarn is completely unraveled and I had to tie it on the end (yes I am a cheap glider pilot). I was by the way the first one to ask and receive a white one! Do they come with a lifetime warranty

CH Ventus B