Is that front ramped part of yours broken?
I have the same trailer and that problem with mine.
I did a lot of searching for these and have come close but not exact. I ordered some that I thought were the right ones , but when they showed up they had a textured surface. Not exactly what you want on something that slides. I meant to contact the supplier and ask about other options but then got sidetracked with other family/life issues. I will look for the info and post here when I find it
John,Carol
Sarah,Rachel, JJ
2005 YukonXL 2500 8.1 4.10
2008 Sunnybrook 298BH