Discovered that my cover and the original gutter extensions on my X17Z did not want to work together, kinda surprised the cover won.
It was just the rear one that was messed up, it didn't break, but was twisted. I changed the rear one today and used a much shorter version to which a separate extension can be put on and taken back off before the cover goes on. Not a huge mod, but could be a helpful idea. While the front didn't seem to have as much of an issue, I will also convert it, if for no other reason than to keep from putting a hole in the cover.
2013 Starcraft Travel Star 229TB
2011 Jayco X17Z(traded in)
2010 Jayco Jay Series 1207(traded for the 17Z)
2011 Chevrolet Silverado 2500HD Z71 CC 6.0L/3.73
Reese "Pro Series" 800lb Trunnion WDH w/sway control