mikes
We have a 2016 177SE. There were a few cracks in the exterior caulking last year, more were apparent this year.

In checking things out more deeply, I found that the top two siding sections of both sides, front and back, were compromised. There's not really any backing for the side aluminum there, so it depends on the bonding properties of whatever sealant Riverside used.

Anyway, even though the caulking there looked OK under casual inspection, I found that if I pressed in on the siding, the caulk wasn't really sealed, as pressing in would open a gap where the caulk was failing. That's especially troublesome at the rear, where water can be forced in while driving in the rain.

So, I cleaned out the old caulk as best I could (plastic razor blades are a new found tool), and resealed all the side seams, making sure to get caulk inside the joints where the siding could be pressed in. I used Geocel Proflex RV last year, and it was a sticky mess to work with. This time I used Sikaflex 221, and it's not only much easier to work with, and I think it's going to work better (it's a sealant and adhesive). If you re-caulk, blue painter's tape and soapy water work well to keep things neat.
Mike
Quote 0
sunvalleyjoe
when did production change from west coast to Indiana?Seems to me the older Retros had less quality issues.GBA!!SVJ
Quote 0
mikes
?? When were they ever on the west coast? Archive.org has a web page of theirs dating from 2011, showing them at the same location in LaGrange, IN.
Mike
Quote 0
sunvalleyjoe
California dealer must be wrong told me some units had been made in Riverside California . Seems like the 150 and 155 older model have less problems and more milage than newer units..I will check with editor of Trailer life Mag he seems to have a lot of knowledge on all RV,s on the market. GBA!!SVJ 
Quote 0