Hi Jim,
I have been off work for a couple of weeks and I was not aware that Heartland had made the Trailair a "standard." As I said previously, I definitely had a smoother ride in the truck with the trailer that had only the Mor/ryde suspension. But, I could not detect any significant improvement in the ride when the Trailair was added to the mix. I am certain that the ride in the trailer must be significantly smoother as you can see the vertical dampening action of the pin box when you are moving down the road, however, since I don't ride in the trailer, I did not find the effect on the truck to be all that great. In fact, I was very disappointed with the Trailair because I had read so many great comments by owners on the Trailair web site and other forums. I was seriously considering getting one for my own trailer.
Then I saw the Mor/ryde "Rubber Pin Box" in the Dec Trailer Life Magazine. I looked at their web site and I went to the factory in Elkhart. I talked to one of their designers and looked at a cut-away model that they have on display. I also talked to another owner who has one on a 38' fifth wheel and he was very pleased with it. If you look at the animation on their web site you can see that it provides the dampening primarily in the longitudinal axis which is exactly what I am looking for. I can't wait to try it out and I will be glad to give you a report when I do.
My TV is a '02 GMC 2500HD SLT Duramax/Allison Crew Cab Short Bed with the heavy duty tow package. I have a Reese 16K sliding hitch and a Prodigy brake controller. I have an "Equalizer" (brand name) hitch for towing travel trailers, office trailers, boats, etc. I have 121,000+ miles on the truck and have just started having some problems with the fuel injectors. Due to a known problem with the '01 and '02 injectors GM extended the warranty to 7 yrs or 200,000 miles. My dealer's service tech says my injectors don't meet the specific criteria of the TB for warranty replacement but it is close enough that they think GM will allow it. I have four that are definitely bad and the other four are just waiting to go bad. There is a nationwide shortage of injectors right now so I am waiting for the new ones to come in before I go back to work. I can still drive the truck but my mileage is really crappy and any time I stop and idle I put out a cloud of gray smoke that makes people look around to see where it is coming from. Embarrassing!