I have a lp sgc0660 grapple that is almost new i have maybe 3 hours on it. when I try to close the grapple sometimes it works fine other times it will not close and seems to try to close but does not move more than an inch. It actually did the same thing when the tech delivered the tractor. but started working normally again and the last time I used it it worked fine. today I had the issue again is there something I am doing wrong. I originally thought it was because I was trying to do a different loader function along with closing the grapple but today I was careful not to move the loader and just close the grapple and it would not close.