I wish you luck. Not the same brand, but we're on round 2 of cracks in our front cap and outdoor kitchen door. But, CC is taking care of it without question. With as much cracking as you mentioned, almost sounds like a new side wall, or 2 is possible. Ours was repaired the first time, and looked great, but resurfaced a few months later. So now it's a replacement instead of repair.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.