Hi @Deej - Thanks so much for reaching out! It's great to hear how much you love your Quarter Dome Tent.
For your question on the tent seams flaking, we have good news! Another community member has asked about this before and there is a thread on how to clean, prep, and re-waterproof your tent that should help with your situation.
Our sealant recommendation for once your Quarter Dome has been cleaned is the Gear Aid Seam Sure Water-Based Seam Sealer. Additionally, you might want to take a look at this discussion on flaking Quarter Dome seams and how the coating is best repaired.
The most effective way to address the velcro and trim coming off will be with a bit of sewing. This step-by-step guide on how to reattach tent velcro does a good job explaining the process. There are ways to attach those pieces with glue, but that can make your tent fabric brittle and more likely to rip.
Let us know if you have any additional question and we'll be happy to help!