My experiences of Grand Design Illusion 17MKE

My experiences of Grand Design Illusion 17MKE
We bought this travel trailer due to good reputation of Grand Design products. The 17MKE fit our needs in every way. However, our experience has differed from what was the norm for this company. I will list problems and attach photos of a few of the issues. Most of our problems have been fixed but there are still a few that we are trying to get rectified. Of note the Grand Design dealer network in Missouri is horrible, which I will touch on later.

1. Water leak (drain) under kitchen sink. We fixed this with parts from home depot but notified Grand Design as this seems to be a common problem.
2. Faucet under pass-through storage developed a leak at hot water side. This was fixed with parts from Grand Design. They were quick in getting the parts to me after a little back and forth. I just wished I had caught this earlier as my compartment flooded, a tanks worth of propane was used trying to heat the hot water that was leaking, and I lost all of my fresh water.
3. Fenders developed cracks around screws. Parts were sent to me at my request have not got around to replacing yet.
4. Delamination of interior wall underneath front window. Fixed under warranty, leak was caused by a bad seal around window. Portion of paneling was cut out and new patch put in place.
5. Bubbles developed along front cap seam. Fixed under warranty.
6. Sealed underbelly came off due to lack of washers. This issue remains unfixed although Grand Design has said they will cover it. The first dealer, Coachlight RV in Joplin, MO (Three hour drive one way), did not fix this as they said it looked good. I fail to understand how my tape job and subsequent failures of my tape job make this issue resolved. Upon further questioning the tech said, he just glanced at the underbelly and did not actually take the time to look at the problem. Which led us to the second dealer, Youngblood Powersports in Ozark, MO (Two hour drive one way). We made and appointment and told their representative that we had a warranty issue concerning underbelly that needed fixed. They told us to bring it up 4Aug2020, which we did. Once we arrived they tried to gouge us for $200 for a diagnostic fee even though this was covered under warranty. Disgusted at this we left. So this issue is not fixed.
7. Roof has separated along seam in front. A five inch long gap has appeared above gutter on front side of unit. This issue was passed on to Grand Design but we have heard nothing about it.

We are extremely dissatisfied in the way this rv has had so many issues in the small amount of time we have owned it. We have now had it for about a year and four months. Warranty for most things has passed so now we are waiting for the next issue that will happen. Altogether, we have driven a combined total of seventeen hours, between dealers, with issues not fixed.