We've taken the 5th Wheel out a couple of times now since have the Mor/Ryde Rubber Pinbox installed and although the ride is somewhat improved on certain roads, we still get more chucking than we care for.
I've read that you can actually see the kingpin move back & forth on rough roads but we don't see this on ours. This lead me to wonder if there might be a needed adjustment, an installation problem or maybe the wrong model number. I know that when these are ordered you have to specify the OEM pinbox and the Trailer GVW.
I talked to the dealer and also to the tech folks at Mor/Ryde and here is what I've learned so far:
1.) The correct pinbox was is ordered by the dealer based on my Sabre 32 RCTS specs:
- Lippert 1621 PinBox
- Empty weight ~= 10,000
- GVW= 13,800 lbs
The above pinbox is designed for trailers with a GVW between 11,501lbs-14,000lbs. (Uses a #4 Rubber Sheer spring)
2.) The current loaded weight of my trailer is ~11,400lbs indicating to the Mor/ryde Tech person that the Model #RPB72-1621HD-03 ( GVW 11,500 or less) with a #3 rubber sheer spring would have been a better choice and should give better results.
The MorRyde guy seems confident that using the #3 spring that is better matched to my trailer weight would help a lot and he is very willing to sell me one. My dealer sez that he ordered the correct pinbox based on MorRyde ordering guide. He was confused to learn, that the Mor/Rdy tech person, is now suggesting something different, but he is also willing to order a new spring for me.
At my requets...the dealer is now having a "lively" telephone debate with the Mor/ryde Tech guy to see what should be done and who should pay the additional ~$200 for a new spring.
I'm not sure what the outcome will be except we hate the chucking.
Any comments or simular experiences to share??