I got the MH 871 and I use SCAL never had an issue before I started using the MH series but it pushes out the vinyl a lot (sometimes it goes almost to the end of the roll) I know it's a user error but I can't figure out what to do to fix it. With 2 young kids I don't have quiet time to call in and get help so hoping someone here has had the same problem and can help me fix it! Thanks!